Bộ đề thi thử 2019 Tiếng Anh cực hay có lời giải chi tiết
Bộ đề thi thử 2019 Tiếng Anh cực hay có lời giải chi tiết (Đề số 17)
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1388 lượt thi
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50 câu hỏi
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60 phút
Danh sách câu hỏi
Câu 1:
Mark the letter A, B, C, or D on your answer sheet to indicate the word whose underlined part differs from the other three in pronunciation in each of the following questions.
Đáp án B.
Đáp án B, phát âm là /t/, còn lại phát âm là /ɪd/
Kiến thức cần nhớ |
Cách phát âm đuôi “ed”: - Các từ có phiên âm kết thúc bằng /t/,/d/, đuôi “ed” được phát âm là /ɪd/ - Các từ có phiên âm kết thúc là: /t∫/, /s/, /k/, /f/, /p/, //, /∫/ thì đuôi “ed” được phát âm là /t/ - Các trường hợp còn lại đuôi “ed” được phát âm là /d/ |
Câu 2:
Mark the letter A, B, C, or D on your answer sheet to indicate the word whose underlined part differs from the other three in pronunciation in each of the following questions.
Đáp án A.
Đáp án A được phát âm là /s/, còn lại phát âm là /k/
A. century /'sent∫əri/: thế kỉ
B. culture / 'kʌlt∫ə/: văn hóa
C. secure /sə'kjʊr/: bảo vệ, an toàn
D. applicant / 'æplikənt/: ứng viên
Câu 3:
Mark the letter A, B, C, or D on your answer sheet to indicate the word that differs from the other three in the position of primary stress in each of the following questions.
Đáp án B.
A. offer /'ɔ:fər /: đề nghị
B. canoe /kə'nu:/: ca nô
C. country/'kʌntri/: quốc gia
D. standard /'stændəd/: tiêu chuẩn
Đáp án B trọng âm rơi vào âm tiết thứ 2, các đáp án còn lại rơi vào âm tiết thứ nhất
Câu 4:
Mark the letter A, B, C, or D on your answer sheet to indicate the word that differs from the other three in the position of primary stress in each of the following questions.
Đáp án C.
A. pollution / pə'lu∫ən /: ô nhiễm
B. computer / kəm'pju:tə /: máy tính
C. currency / 'kʌrənsi /: tiền tệ
D. allowance / ə'laʊəns /: sự cho phép
Đáp án C trọng âm rơi vào âm tiết 1, các đáp án còn lại rơi vào âm tiết thứ 2.
Câu 5:
Mark the letter A, B, C, or D on your answer sheet to indicate the underlined part that needs correction in each of the following questions.
Measles are (A) a very contagious (B) disease that can spread through contact with (C) infected mucus A and (D) saliva.
Đáp án A.
Đáp án A. are → is
Vì measles (n) là bệnh sởi - một danh từ số ít
Tạm dịch: Bệnh sởi là một bệnh truyền nhiễm dễ lan truyền khi tiếp xúc với chất dịch có nhiễm khuẩn, ví dụ như nước bọt hoặc dịch mũi của người bệnh.
Câu 6:
Mark the letter A, B, C, or D on your answer sheet to indicate the underlined part that needs correction in each of the following questions.
I always (A) forget closing (B) the (C) door before going out.(D)
Đáp án B.
Đáp án B. closing → to close
Tạm dịch: Tôi thường quên đóng cửa trước khi ra khỏi nhà.
Câu 7:
Mark the letter A, B, C, or D on your answer sheet to indicate the underlined part that needs correction in each of the following questions.
For such (A) a demanding job, you will need qualifications,(B) soft skills and having full (C)
commitment.(D)
Đáp án D.
Đáp án D. having full commitment → full commitment
Các dạng cấu trúc song song: N/ N/ N..., V-ing/V-ing/V-ing..., To V/To V/To V...
Vì phía trước có 2 danh từ là: qualification, soft skills nên phía sau phải dùng 1 danh từ để đảm bảo cấu trúc song song.
Tạm dịch: Đối với một công việc đòi hỏi nhiều nỗ lực, bạn sẽ cần trình độ, kĩ năng mềm và sự tận tâm hết mình.
Câu 8:
Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions
The last half of the nineteeth century_____a steady improvement in the means of travel.
Đáp án B.
Tạm dịch: Nửa cuối của thế kỷ 19 chứng kiến sự cải tiến đều đều của các phương tiện giao thông.
Câu 9:
Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions.
George finally succeeded in swimming across the lake at his fourth______.
Đáp án A.
A. attempt (n, v): sau rất nhiều cố gắng, nỗ lực đã thành công trong việc gì (particular act of trying)
B. process (n): quá trình
C. effort (n): sự cố gắng, nỗ lực
D. instance (n): ví dụ
Tạm dịch: Cuối cùng George cũng bơi được qua hồ ở lần cố gắng thứ tư.
Câu 10:
Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions.
He was very lucky when he fell off the ladder. He______himself.
Đáp án A.
Cấu trúc: could have + PPII: chuyện đã có thể xảy ra trong quá khứ
Tạm dịch: Khi bị ngã khỏi thang anh ẩy đã rất may mắn. Anh ấy đã có thế gây tổn thương bản thân mình.
Câu 11:
Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions.
________her supervisor’s approval, she shouldn’t begin the project.
Đáp án D.
Câu điều kiện loại I: Unless = If…………not
Tạm dịch: Nếu Susan không có được sự đồng ý của giáo viên hướng dẫn, cô ấy không nên bắt đầu dự án của mình.
Câu 12:
Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions.
Modem computer science and artificial intelligence_______in the pre-war work of Goedel,
Turing, and Zuse.
Đáp án D.
Cấu trúc: Câu bị động đặc biệt:
To be said/ told/ reported/ thought/ believed to V (nếu động từ cùng thì với to be) hoặc to have Vpp (động từ lùi thì so với to be).
Trong câu này,“các tác phẩm tiền chiến” là việc trong quá khứ, động từ tường thuật is said ở hiện tại nên cần dùng To have Vpp - To have fought.
Tạm dịch: Khoa học máy tính hiện đại và trí tuệ nhân tạo được cho rằng là bắt nguồn từ những tác phẩm tiền chiến của Goedel, Turing, and Zuse.
Câu 13:
Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions.
Students are_______less pressure as a result of changes in testing procedures.
Đáp án A.
Cấu trúc: be under pressure: chịu áp lực
Tạm dịch: Học sinh bây giờ phải chịu áp lực ít hơn do có những thay đổi trong quá trình thi cử
Câu 14:
Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions
Tom is getting ever keener on doing research on_______.
Đáp án A.
To be keen on N/ V-ing (v): yêu thích, đam mê cái gì
A. biology (n): môn sinh học
B. biological (adj): thuộc về sinh học
C. biologist (n): nhà sinh vật học
D. biologically (adv): thuộc về sinh học
Tạm dịch: Tom đang ngày càng đam mê công việc nghiên cứu sinh học
Câu 15:
Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions.
The most______mineral derived from the sea is sodium chloride or common salt.
Đáp án D.
A. insufficient (a): không đủ
B. sufficient (a): đủ
C. generous (a): hào phóng
D. plentiful (a): nhiều, phong phú
Tạm dịch: Chất khoáng nhiều nhất thu được ở biển là natri clorua hay chính là muối ăn.
Câu 16:
Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions.
A number of young teachers nowadays_______themselves to teaching disadvantaged children.
Đáp án D.
A. offer: đề nghị
B. stick: gắn với, dính với
C. give: đưa, tặng
D. devote: cống hiến
- devote sth to doing st: dành tất cả thời gian, sức lực, nhiệt huyết vào việc gì đó.
Tạm dịch: Nhiều giáo viên ngày nay cổng hiến bản thân để dạy những trẻ em khuyết tật
Câu 17:
Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions.
Cutting in lines at the grocery store, for example, or being habitually late for meetings is considered behavior.
Đáp án D.
A. suitable (adj): phù hợp
B. unnecessary (adj): không cần thiết
C. appropriate (adj): thích hợp, thích đáng
D. rude (adj): thô lỗ
Tạm dịch: Ví dụ như chen ngang khi xếp hàng ở cửa hàng rau quả hoặc thường xuyên đi họp muộn được coi là thái đọ cư xử thô lỗ.
Câu 18:
Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions.
Sorry for being late. I was_________in the traffic for more than an hour.
Đáp án B.
- carry on (with sth): tiếp tục làm gì
- hold up (sb): ủng hộ ai
- hold up (sth): trì hoãn và cản trở những sự vận động và sự tiến bộ của ai/ cái gì
- put off sth: trì hoãn cuộc hẹn đã được sắp xếp trước
- put (sb) off: làm ai ghét, không tin ai, cái gì
Tạm dịch: Xin lỗi vì muộn giờ. Tôi đã bị cản trở bởi tắc đường hơn 1 tiếng
Câu 19:
Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions.
She was tired and couldn’t keep______the group.
Đáp án A.
- keep up with sth: giữ được nhịp, theo kịp, bắt kịp thông tin với cái gì
- keep sb out of sth: ngăn chặn ai để không bị dính dáng, ảnh hưởng bởi cái gì
Tạm dịch: Cô ấy mệt mỏi và đã không thể theo kịp với nhóm.
Câu 20:
Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions.
Two friends, Diana and Anne, are talking about Anne’s new blouse.
Diana: “That blouse suits you perfectly, Anne.”
Anne: “________.”
Đáp án C.
Khi được người khác bày tỏ cảm xúc tích cực về điều gì, vật gì của bản thân thì một trong những cách đáp lại lịch sự và thông dụng nhất là “thank you”- cảm ơn
Vì vậy C là đáp án chính xác.
Tạm dịch: Hai người bạn Diana và Ann đang nói về chiếc áo choàng mới của Anne.
Diana: Chiếc áo choàng cực kì hợp với bạn, Anne Anne: Cảm ơn bạn!
Câu 21:
Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions.
Mary is talking to a porter in the hotel lobby.
Porter: “Shall I help you with your suitcase?”
Mary: “______”
Đáp án B.
A. Not a chance: Không thể xảy ra được
B. That’s very kind of you: Bạn thật tốt bụng
C. I can’t agree more: Tôi hoàn toàn đồng ý
D. What a pity!: Thật là đáng tiếc
Khi được ai đó đề nghị được giúp đỡ mình, nếu đồng ý cách đáp lại lịch sự và thông dụng là: “That is very kind of you”
Tạm dịch: Mary đang nói chuyện với người phục vụ ở sảnh khách sạn
Người phục vụ: Tôi có thể giúp bạn xách chếc vali này được chứ?
Mary: Bạn thật tốt bụng
Câu 22:
Mark the letter A, B, c, or D on your answer sheet to indicate the word(s) CLOSEST in meaning to the underlined word(s) in each of the following questions.
Students are expected to always adhere to school regulations.
Đáp án D.
A. question (v): chất vấn, hỏi
B. violate (v): xâm phạm
C. disregard (v): bất chấp
D. adhere to sth: tôn trọng, tuân theo, trung thành với cái gì = follow
Câu 23:
Mark the letter A, B, c, or D on your answer sheet to indicate the word(s) CLOSEST in meaning to the underlined word(s) in each of the following questions.
A number of programs have been initiated to provide food and shelter for the underprivileged in the remote areas of the country.
Đáp án C.
A. the underprivileged: bị thiệt thòi về quyền lợi
B. rich citizens: những công dân giàu
C. poor inhabitants: những cư dân nghèo
D. enthusiastic people: những người nhiệt tình
Suy ra đáp án cần chọn là đáp án C.
Tạm dịch: Nhiều chương trình đã được khuyến khích để cung cấp thức ăn và chỗ ở cho những người bị thiệt thòi.
Câu 24:
Mark the letter A, B, C, or D on your answer sheet to indicate the word(s) OPPOSITE in meaning to the underlined word(s) in each of the following questions.
Drivers are advised to get enough petrol because filling stations are few and far between on the highway.
Đáp án A.
A. easy to find: dễ tìm, dễ thấy
B. difficult to access: khó để tiếp cận
C. unlikely to happen: không có khả năng xảy ra
D. impossible to reach: không thể với tới được
- few and far between: khan hiếm, thất thường, có lúc có lúc không >< easy to find: dễ tìm, dễ thấy
Suy ra A là đáp án đúng.
Tạm dịch: Những người lái xe được khuyên bơm đủ xăng vì trạm bơm xăng thường khan hiếm.
Câu 25:
Mark the letter A, B, C, or D on your answer sheet to indicate the word(s) OPPOSITE in meaning to the underlined word(s) in each of the following questions.
A relaxed and convivial group of around 45 Slow Food members and friends is sharing a simple BBQ lunch.
Đáp án D.
A. lively: sinh động, hoạt bát, sôi nổi
B. large: rộng
C. old: cũ, già
D. unsociable: không hòa đồng, không thân thiện, khó gần
- convivial: thân thiện, vui vẻ >< unsociable.
Câu 26:
Mark the letter A, B, C, or D on your answer sheet to indicate the word(s) OPPOSITE in meaning to the underlined word(s) in each of the following questions
I’m sure Luisa was very disappointed when she failed to get the scholarship.
Đáp án B.
Cấu trúc: Must have VpII: đoán về 1 việc chắc chắn xảy ra trong quá khứ.
Vì trong câu đề bài có cụm ‘I’m sure” , suy ra người nói đã đã chắc chắn việc đó đã xảy ra trong quá khứ.
Vì vậy B là đáp án đúng.
Tạm dịch: Tôi chắc chắn rằng Luisa đã rất thất vọng khi cô ấy trượt bài kiểm tra.
Câu 27:
Mark the letter A, B, C, or D on your answer sheet to indicate the word(s) OPPOSITE in meaning to the underlined word(s) in each of the following questions.
“You had better see a doctor if the sore throat does not clear up”, she said to me.
Đáp án D.
Cấu trúc:
- To remind sb of doing sth: nhắc nhở ai nhớ về cái gì
- Order sb to do sth: ra lệnh ai làm gì
- Insist that + clause: khăng khăng việc gì
- Suggest that + clause: khuyên bảo, gợi ý ai làm gì
Câu gốc có cấu trúc had better ý chỉ lời khuyên bảo, gần giống với should →dùng cấu trúc suggest that + clause
Dịch câu đề: Bạn sẽ khá hơn khi gặp một người bác sĩ nếu cơn đau họng không dứt, cô ẩy nói với tôi.
Dịch câu D : Cô ấy khuyên tôi rằng tôi nên đến gặp bác sĩ nếu cơn đau họng không dứt.
Câu 28:
Mark the letter A, B, C, or D on your answer sheet to indicate the word(s) OPPOSITE in meaning to the underlined word(s) in each of the following questions.
Without her teacher’s advice, she would never have written such a good essay.
Đáp án C.
Dịch câu đề: Nếu không có lời khuyên của giáo viên thì cô ấy không thể viết được bài luận hay như vậy.
Cấu trúc: Câu điều kiện loại 3, diễn tả hành động không xảy ra trong quá khứ.
Dịch câu C : Cô ấy viết một bài luận tốt vì giáo viên đã cho cô ấy một vài lời khuyên.
Kiến thức cần nhớ |
As và Since được dùng như Because, mang nghĩa là bởi vì |
Câu 29:
Mark the letter A, B, C, or D on your answer sheet to indicate the sentence that best combines each pair of sentences in the following questions.
She tried very hard to pass the driving test. She could hardly pass it.
Đáp án C.
Một trong những cấu trúc của mệnh đề nhượng bộ:
No matter how+ adj/adv +S+V, clause
Dịch câu đề: Cô ấy đã cố gắng rất nhiều đế vượt qua bài kiểm tra lái xe. Cô ấy rất khó vượt qua nó
A. Mặc dù cô ẩy không cố gắng để vượt qua bài kiểm tra lái xe, cô ấy đã có thể vượt qua nó
B. Mặc dù có khả năng vượt qua bài kiểm tra lái xe, cô ấy không vượt quá nó
C. Mặc dù cô ấy đã cố gắng rất nhiều, nhưng cô ấy đã không thế vượt qua bài kiếm tra lái xe
D. Cô ấy đã cố gắng rất nhiều, nên cô ấy đã vươt qua bài kiếm tra lái xe 1 cách thỏa mãn
Suy ra C là đáp án đúng.
Câu 30:
Mark the letter A, B, C, or D on your answer sheet to indicate the sentence that best combines each pair of sentences in the following questions.
We didn’t want to spend a lot of money. We stayed in a cheap hotel.
Đáp án A.
Cấu trúc: Rather than + V-ing: thay vì làm việc gì đó
Dịch câu đề: Chúng tôi không muốn tiêu nhiều tiền, chúng tôi đã ở lại một khách sạn rẻ tiền
A. Thay vì tiêu tốn nhiều tiền, chúng tôi đã ở lại một khách sạn rẻ tiền
B. Thay vì tiêu tốn nhiều tiền, chúng tôi đã ở lại 1 khách sạn rẻ tiền
C. Chúng tôi đã ở lại 1 khách sạn rẻ tiền, nhưng chúng tôi đã phải tiêu tốn nhiều tiền
D. Chúng tôi đã không ở lại 1 khách sạn rẻ tiền nhưng chúng tôi đã có nhiều tiền để tiêu
Câu 31:
Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct word or phrase that best fits each of the numbered blanks from 31 to 35.
WAYS TO IMPROVE YOUR MEMORY
A good memory is often seen as something that comes naturally, and a bad memory as something that cannot be changed, but actually there is a lot that you can do to improve your memory.
We all remember the things we are interested in and forget the ones that bore US. This no doubt explains
the reason (31)______schoolboys remember football results effortlessly but struggle (32)________dates
from their history lessons! Take an active interest in what you want to remember, and focus on it (33)______.One way to make yourself more interested is to ask questions — the more the better!
Physical exercise is also important for your memory, because it increases your heart (34)_______and
sends more oxygen to your brain, and that makes your memory work better. Exercise also reducesstress, which is very bad for the memory.
The old saying that —eating fish makes you brainyl may be true after all. Scientists have discovered
that the fats (35)_______in fish like tuna, sardines and salmon — as well as in olive oil - help to improve the memory. Vitamin-rich fruits such as oranges, strawberries and red grapes are all good - brain food, too.
(Source: —New Cutting Edge, Cunningham, S. & Moor. 2010. Harlow: Longman)
Điền vào số 31
Đáp án A.
Cấu trúc: The reason why + một mệnh đề cần nhấn mạnh + be (is/was): Câu nhấn mạnh, được dùng để giải thích, tập trung sự chú ý của người đọc.
Câu 32:
Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct word or phrase that best fits each of the numbered blanks from 31 to 35.
WAYS TO IMPROVE YOUR MEMORY
A good memory is often seen as something that comes naturally, and a bad memory as something that cannot be changed, but actually there is a lot that you can do to improve your memory.
We all remember the things we are interested in and forget the ones that bore US. This no doubt explains
the reason (31)______schoolboys remember football results effortlessly but struggle (32)________dates
from their history lessons! Take an active interest in what you want to remember, and focus on it (33)______.One way to make yourself more interested is to ask questions — the more the better!
Physical exercise is also important for your memory, because it increases your heart (34)_______and
sends more oxygen to your brain, and that makes your memory work better. Exercise also reducesstress, which is very bad for the memory.
The old saying that —eating fish makes you brainyl may be true after all. Scientists have discovered
that the fats (35)_______in fish like tuna, sardines and salmon — as well as in olive oil - help to improve the memory. Vitamin-rich fruits such as oranges, strawberries and red grapes are all good - brain food, too.
(Source: —New Cutting Edge, Cunningham, S. & Moor. 2010. Harlow: Longman)
Điền vào số 32
Đáp án C.
- struggle for: đấu tranh, cổ gắng, vật lộn đế giành lẩy
- struggle over: đấu tranh, khó khăn, vật lộn vượt qua
Chọn đáp án C là phù họp (... nhớ kết quả trận đấu bóng đá dễ dàng nhưng rất khó nhớ mốc ngày tháng trong các bài học lịch sử).
Câu 33:
Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct word or phrase that best fits each of the numbered blanks from 31 to 35.
WAYS TO IMPROVE YOUR MEMORY
A good memory is often seen as something that comes naturally, and a bad memory as something that cannot be changed, but actually there is a lot that you can do to improve your memory.
We all remember the things we are interested in and forget the ones that bore US. This no doubt explains
the reason (31)______schoolboys remember football results effortlessly but struggle (32)________dates
from their history lessons! Take an active interest in what you want to remember, and focus on it (33)______.One way to make yourself more interested is to ask questions — the more the better!
Physical exercise is also important for your memory, because it increases your heart (34)_______and
sends more oxygen to your brain, and that makes your memory work better. Exercise also reducesstress, which is very bad for the memory.
The old saying that —eating fish makes you brainyl may be true after all. Scientists have discovered
that the fats (35)_______in fish like tuna, sardines and salmon — as well as in olive oil - help to improve the memory. Vitamin-rich fruits such as oranges, strawberries and red grapes are all good - brain food, too.
(Source: —New Cutting Edge, Cunningham, S. & Moor. 2010. Harlow: Longman)
Điền vào số 33
Đáp án C.
A. Hardly: hầu như không
B. Slightly: hơi
C. Consciously: có ý thức
D. Easily: dễ dàng
Ta nói: Có ý thức tập trung vào nó, chứ không phải tập trung dễ dàng/ hơi tập trung/ không tập trung
Vì vậy C là đáp án đúng
Câu 34:
Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct word or phrase that best fits each of the numbered blanks from 31 to 35.
WAYS TO IMPROVE YOUR MEMORY
A good memory is often seen as something that comes naturally, and a bad memory as something that cannot be changed, but actually there is a lot that you can do to improve your memory.
We all remember the things we are interested in and forget the ones that bore US. This no doubt explains
the reason (31)______schoolboys remember football results effortlessly but struggle (32)________dates
from their history lessons! Take an active interest in what you want to remember, and focus on it (33)______.One way to make yourself more interested is to ask questions — the more the better!
Physical exercise is also important for your memory, because it increases your heart (34)_______and
sends more oxygen to your brain, and that makes your memory work better. Exercise also reducesstress, which is very bad for the memory.
The old saying that —eating fish makes you brainyl may be true after all. Scientists have discovered
that the fats (35)_______in fish like tuna, sardines and salmon — as well as in olive oil - help to improve the memory. Vitamin-rich fruits such as oranges, strawberries and red grapes are all good - brain food, too.
(Source: —New Cutting Edge, Cunningham, S. & Moor. 2010. Harlow: Longman)
Điền vào số 34
Đáp án C.
A. degree: mức độ, trình độ
B. level: mức độ, trình độ
C. rate: tốc độ, tỷ lệ
D. grade: điểm số
Cụm từ: Heart rate: nhịp tim
Câu 35:
Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct word or phrase that best fits each of the numbered blanks from 31 to 35.
WAYS TO IMPROVE YOUR MEMORY
A good memory is often seen as something that comes naturally, and a bad memory as something that cannot be changed, but actually there is a lot that you can do to improve your memory.
We all remember the things we are interested in and forget the ones that bore US. This no doubt explains
the reason (31)______schoolboys remember football results effortlessly but struggle (32)________dates
from their history lessons! Take an active interest in what you want to remember, and focus on it (33)______.One way to make yourself more interested is to ask questions — the more the better!
Physical exercise is also important for your memory, because it increases your heart (34)_______and
sends more oxygen to your brain, and that makes your memory work better. Exercise also reducesstress, which is very bad for the memory.
The old saying that —eating fish makes you brainyl may be true after all. Scientists have discovered
that the fats (35)_______in fish like tuna, sardines and salmon — as well as in olive oil - help to improve the memory. Vitamin-rich fruits such as oranges, strawberries and red grapes are all good - brain food, too.
(Source: —New Cutting Edge, Cunningham, S. & Moor. 2010. Harlow: Longman)
Điền vào số 35
Đáp án D.
A. made: làm
B. existed: tồn tại
C. founded: được thành lập (Vpp của found: thành lập)
D. found: được tìm thấy (Vpp của find: tìm thấy)
Vì “chất béo” là tân ngữ, không thể “tự tìm thấy” nên phải chọn phương án mang nghĩa bị động.
Vì vậy D là đáp án đúng.
Câu 36:
Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions from 36 to 42.
Martin Luther King, Jf, is well- known for his work in civil rights and for his many famous speeches, among which is his moving “I have a dream” speech. But fewer people know much about King’s childhooD. M.L., as he was called, was bom in 1929 in Atlanta, Georgia, at the home of his maternal grandfather. M.L.’s grandfather purchased their home on Auburn Avenue in 1909, twenty years before M.L was bom. His grandfather allowed the house to be used as a meeting place for a number of organizations dedicated to the education and social advancement of blacks. M.L. grew up in the atmosphere, with his home being used as a community gathering place, and was no doubt influenced by it.
M.L.’s childhood was not especially eventfully. His father was a minister and his mother was a musician. He was the second of three children, and he attended all black schools in a black neighborhood. The neighborhood was not poor, however. Auburn Avenue was an area of banks, insurance companies, builders, jewelers, tailors, doctors, lawyers, and other businesses and services. Even in the face of Atlanta’s segregation, the district thrived. Dr. King never forgot the community spirit he had known as a child, nor did he forget the racial prejudice that was a huge barrier keeping black Atlantans from mingling with whites.
What is the passage mainly about?
Đáp án C.
Đoạn văn chủ yếu về vấn đề gì?
A. Định kiến tồn tại ở Atlanta
B. Ông của M.L.
C. Tuổi thơ của Martin Luther King
D. Hàng xóm nơi mà King lớn lên
Bài viết tập trung về tuổi thơ của Martin Luther King, đoạn 1 nói về bối cảnh gia đình, đoạn 2 nói về bối cảnh xã hội của ông.
Ý A và D quá chi tiết, không thể là nội dung bao quát toán bài. Ý B thì quá chung chung.
Câu 37:
Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions from 36 to 42.
Martin Luther King, Jf, is well- known for his work in civil rights and for his many famous speeches, among which is his moving “I have a dream” speech. But fewer people know much about King’s childhooD. M.L., as he was called, was bom in 1929 in Atlanta, Georgia, at the home of his maternal grandfather. M.L.’s grandfather purchased their home on Auburn Avenue in 1909, twenty years before M.L was bom. His grandfather allowed the house to be used as a meeting place for a number of organizations dedicated to the education and social advancement of blacks. M.L. grew up in the atmosphere, with his home being used as a community gathering place, and was no doubt influenced by it.
M.L.’s childhood was not especially eventfully. His father was a minister and his mother was a musician. He was the second of three children, and he attended all black schools in a black neighborhood. The neighborhood was not poor, however. Auburn Avenue was an area of banks, insurance companies, builders, jewelers, tailors, doctors, lawyers, and other businesses and services. Even in the face of Atlanta’s segregation, the district thrived. Dr. King never forgot the community spirit he had known as a child, nor did he forget the racial prejudice that was a huge barrier keeping black Atlantans from mingling with whites.
When was M.L. bom?
Đáp án B.
M.L. được sinh ra năm nào?
A. 1909
B. 1929
C. 1949
D. 20 năm sau khi bố mẹ của ông gặp nhau
Thông tin nằm ở đoan 1: But few people know much about King's childhood. M.L., as he was called, was bom in 1929 in Atlanta, Georgia, at the home of his maternal grandfather: Nhưng chỉ một số người biết về tuổi thơ của ML, như cách mà ông được gọi, sinh vào năm 1929 ở Atlanta, Georgia, nhà của ông ngoại.
Câu 38:
Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions from 36 to 42.
Martin Luther King, Jf, is well- known for his work in civil rights and for his many famous speeches, among which is his moving “I have a dream” speech. But fewer people know much about King’s childhooD. M.L., as he was called, was bom in 1929 in Atlanta, Georgia, at the home of his maternal grandfather. M.L.’s grandfather purchased their home on Auburn Avenue in 1909, twenty years before M.L was bom. His grandfather allowed the house to be used as a meeting place for a number of organizations dedicated to the education and social advancement of blacks. M.L. grew up in the atmosphere, with his home being used as a community gathering place, and was no doubt influenced by it.
M.L.’s childhood was not especially eventfully. His father was a minister and his mother was a musician. He was the second of three children, and he attended all black schools in a black neighborhood. The neighborhood was not poor, however. Auburn Avenue was an area of banks, insurance companies, builders, jewelers, tailors, doctors, lawyers, and other businesses and services. Even in the face of Atlanta’s segregation, the district thrived. Dr. King never forgot the community spirit he had known as a child, nor did he forget the racial prejudice that was a huge barrier keeping black Atlantans from mingling with whites.
What is Martin Luthur King well- known for?
Đáp án D.
Martin Luther King nổi tiếng vì điều gì?
A. Những xuất bản của ông
B. Hàng xóm của ông
C. Tuổi thơ của ông
D. Công việc của ông trong lĩnh vực quyền dân sự
Thông tin nằm ở đoan 1 : Martin Luther King Jr., is well know for his work in civil rights and for his many famous speeches: Martin Luther King, Jr., nổi tiếng về công việc của ông trong lĩnh vực quyên nhân sự và rất nhiều bài diễn thuyết nổi tiếng.
Câu 39:
Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions from 36 to 42.
Martin Luther King, Jf, is well- known for his work in civil rights and for his many famous speeches, among which is his moving “I have a dream” speech. But fewer people know much about King’s childhooD. M.L., as he was called, was bom in 1929 in Atlanta, Georgia, at the home of his maternal grandfather. M.L.’s grandfather purchased their home on Auburn Avenue in 1909, twenty years before M.L was bom. His grandfather allowed the house to be used as a meeting place for a number of organizations dedicated to the education and social advancement of blacks. M.L. grew up in the atmosphere, with his home being used as a community gathering place, and was no doubt influenced by it.
M.L.’s childhood was not especially eventfully. His father was a minister and his mother was a musician. He was the second of three children, and he attended all black schools in a black neighborhood. The neighborhood was not poor, however. Auburn Avenue was an area of banks, insurance companies, builders, jewelers, tailors, doctors, lawyers, and other businesses and services. Even in the face of Atlanta’s segregation, the district thrived. Dr. King never forgot the community spirit he had known as a child, nor did he forget the racial prejudice that was a huge barrier keeping black Atlantans from mingling with whites.
According to the author, M.L.________.
Đáp án D.
Theo tác giả, M.L.
A. Có một tuổi thơ khó khăn
B. Khi còn nhỏ đã là một nhạc sĩ giỏi
C. Thích nghe ông nói chuyện
D. Lớn lên ở một vùng khá là giàu có ở Atlanta
Thông tin nằm ở đoạn 2: The neighborhood was not poor, however: Khu vực láng giềng thực tế thì lại không hề nghèo khó.
Câu 40:
Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions from 36 to 42.
Martin Luther King, Jf, is well- known for his work in civil rights and for his many famous speeches, among which is his moving “I have a dream” speech. But fewer people know much about King’s childhooD. M.L., as he was called, was bom in 1929 in Atlanta, Georgia, at the home of his maternal grandfather. M.L.’s grandfather purchased their home on Auburn Avenue in 1909, twenty years before M.L was bom. His grandfather allowed the house to be used as a meeting place for a number of organizations dedicated to the education and social advancement of blacks. M.L. grew up in the atmosphere, with his home being used as a community gathering place, and was no doubt influenced by it.
M.L.’s childhood was not especially eventfully. His father was a minister and his mother was a musician. He was the second of three children, and he attended all black schools in a black neighborhood. The neighborhood was not poor, however. Auburn Avenue was an area of banks, insurance companies, builders, jewelers, tailors, doctors, lawyers, and other businesses and services. Even in the face of Atlanta’s segregation, the district thrived. Dr. King never forgot the community spirit he had known as a child, nor did he forget the racial prejudice that was a huge barrier keeping black Atlantans from mingling with whites.
Which of the following statements is NOT true?
Đáp án B.
Mệnh đề nào sau đây là KHÔNG đủng?
A. Auburn là một vùng thương mại
B. Ông của M.L. xây nhà của họ ở đại lộ Auburn vào năm 1909
C. M.L. lớn lên ở một vùng người da đen, giàu có
D. Tuổi thơ của M.L. không có nhiều biến cố
Thông tin nằm ở đoạn 1 : M.L's grandfather, the Reverens A.D. Williams, purchased their home on Auburn Avenue in 1909, twenty years before M.L. was bom: Ông của M.L., Reverens AD. Williams, mua nhà ở đại lộ Auburn vào năm 1909, 20 năm trước khi M.L. ra đời.
Ông mua nhà chứ không phải xây nhà nên là ý B sai.
Câu 41:
Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions from 36 to 42.
Martin Luther King, Jf, is well- known for his work in civil rights and for his many famous speeches, among which is his moving “I have a dream” speech. But fewer people know much about King’s childhooD. M.L., as he was called, was bom in 1929 in Atlanta, Georgia, at the home of his maternal grandfather. M.L.’s grandfather purchased their home on Auburn Avenue in 1909, twenty years before M.L was bom. His grandfather allowed the house to be used as a meeting place for a number of organizations dedicated to the education and social advancement of blacks. M.L. grew up in the atmosphere, with his home being used as a community gathering place, and was no doubt influenced by it.
M.L.’s childhood was not especially eventfully. His father was a minister and his mother was a musician. He was the second of three children, and he attended all black schools in a black neighborhood. The neighborhood was not poor, however. Auburn Avenue was an area of banks, insurance companies, builders, jewelers, tailors, doctors, lawyers, and other businesses and services. Even in the face of Atlanta’s segregation, the district thrived. Dr. King never forgot the community spirit he had known as a child, nor did he forget the racial prejudice that was a huge barrier keeping black Atlantans from mingling with whites.
From the passage we can infer that______.
Đáp án B.
Từ đoạn văn chúng ta có thể suy ra rằng:
A. Bố của M.L. là một thành viên của nhà thờ
B. Người ta tập trung ở nhà của M.L. để thực hiện nghỉ lễ tôn giáo
C. Bố của M.L mua nhà của họ ở đại lộ Auburnm
D. M.L. có một tuổi thơ khá cay đắng
Thông tin nằm ở đoạn 1 : He allowed his church and his home to be used as a meeting place for a number of organizations dedicated to the education and social advancement of blacks: Ông cho phép nhà thờ và nhà của ông được dùng làm địa điểm họp mặt của nhiều tổ chức tâm huyết với giáo dục và tiến bộ xã hội của người da đen.
Câu 42:
Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions from 36 to 42.
Martin Luther King, Jf, is well- known for his work in civil rights and for his many famous speeches, among which is his moving “I have a dream” speech. But fewer people know much about King’s childhooD. M.L., as he was called, was bom in 1929 in Atlanta, Georgia, at the home of his maternal grandfather. M.L.’s grandfather purchased their home on Auburn Avenue in 1909, twenty years before M.L was bom. His grandfather allowed the house to be used as a meeting place for a number of organizations dedicated to the education and social advancement of blacks. M.L. grew up in the atmosphere, with his home being used as a community gathering place, and was no doubt influenced by it.
M.L.’s childhood was not especially eventfully. His father was a minister and his mother was a musician. He was the second of three children, and he attended all black schools in a black neighborhood. The neighborhood was not poor, however. Auburn Avenue was an area of banks, insurance companies, builders, jewelers, tailors, doctors, lawyers, and other businesses and services. Even in the face of Atlanta’s segregation, the district thrived. Dr. King never forgot the community spirit he had known as a child, nor did he forget the racial prejudice that was a huge barrier keeping black Atlantans from mingling with whites.
M.L. was________by the atmosphere in which he grew up.
Đáp án C.
M.L. _____bởi không gian nơi mà ông lớn lên.
A. Không bị ảnh hưởng gì cả
B. Bị nghi ngờ
C. Chắc chắn là bị ảnh hưởng
D. Bị định kiến
Thông tin nằm ở đoan 1 : M.L. grew up in this atmosphere, with his home being used as a community gathering place and was no doubt influenced by it: M.L. lớn lên trong không gian nơi mà ngôi nhà được sử dụng như một nơi tập trung cộng đồng và không còn nghi ngờ gì nữa, đã ảnh hưởng bởi nó.
Câu 43:
Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions from 43 to 50.
Carbon dating can be used to estimate the age of any organic natural material; it has been used successfully in archeology to determine the age of ancient artifacts or fossils as well as in a variety of other fields. The principle underlying the use of carbon dating is that carbon is a part of all living things on Earth. Since a radioactive substance such as carbon-14 has a known half-life, the amount of carbon-14 remaining in an object can be used to date that object.
Carbon-14 has a half-life of 5,570 years, which means that after that number of years, half of the carbon- 14 atoms have decayed into nitrogen-14. It is the ratio of carbon-14 in that substance that indicates the age of the substance. If, for example, in a particular sample the amount of carbon-14 is roughly equivalent to the amount of nitrogen-14, this indicates that around half of the carbon-14 has decayed into nitrogen-14, and the sample is approximately 5,570 years old.
Carbon dating cannot be used effectively in dating objects that are older than 80,000 years. When objects are that old, much of the carbon-14 has already decayed into nitrogen-14, and the miniscule amount that is left doesn’t provide a reliable measurement of age. In the case of older objects, other age-dating methods are available, methods which use radioactive atoms with longer half-lives than carbon has.
This passage is mainly about ______.
Đáp án B.
Đoạn văn chủ yếu bàn về
A. khảo cổ học và sự nghiên cứu các hiện vật cổ.
B. một phương pháp xác định niên đại các cổ vật.
C. các ứng dụng khác nhau cho cacbon.
D. sự khác biệt giữa cacbon-14 và nitơ-14.
Câu đầu tiên chính là câu giới thiệu chủ đề của bài: “Carbon dating can be used to estimate the age of any organic natural material; it has been used successfully in archeology to determine the age of ancient artifacts or fossils as well as in a variety of other fields“: Phương pháp xác định niên đại bằng carbon có thể được sử dụng để ước lượng tuổi của bất kì chất hữu cơ tự nhiên nào, nó được sử dụng thành công trong lĩnh vực khảo cổ học để xác định tuổi của các cổ vật, hóa thạch cổ cũng như là trong nhiều lĩnh vưc khác.
Đoạn văn nói về phương pháp xác định niên đại bằng carbon.
Câu 44:
Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions from 43 to 50.
Carbon dating can be used to estimate the age of any organic natural material; it has been used successfully in archeology to determine the age of ancient artifacts or fossils as well as in a variety of other fields. The principle underlying the use of carbon dating is that carbon is a part of all living things on Earth. Since a radioactive substance such as carbon-14 has a known half-life, the amount of carbon-14 remaining in an object can be used to date that object.
Carbon-14 has a half-life of 5,570 years, which means that after that number of years, half of the carbon- 14 atoms have decayed into nitrogen-14. It is the ratio of carbon-14 in that substance that indicates the age of the substance. If, for example, in a particular sample the amount of carbon-14 is roughly equivalent to the amount of nitrogen-14, this indicates that around half of the carbon-14 has decayed into nitrogen-14, and the sample is approximately 5,570 years old.
Carbon dating cannot be used effectively in dating objects that are older than 80,000 years. When objects are that old, much of the carbon-14 has already decayed into nitrogen-14, and the miniscule amount that is left doesn’t provide a reliable measurement of age. In the case of older objects, other age-dating methods are available, methods which use radioactive atoms with longer half-lives than carbon has.
Which of the following is NOT true about carbon-14?
Đáp án A.
Câu nào dưới đây KHÔNG ĐÚNG về carbon-14?
A. Nó và nitơ luôn tồn tại với số lượng bằng nhau trong bất kỳ chất nào.
B. Thời gian bán hủy của nó là hơn 5.000 năm.
C. Nó có thể phân rã thành nitơ-14.
D. Nó là chất phóng xạ.
Các đáp án B, C, D có thông tin được tìm thấy trong bài. B + C- Dẫn chứng ở câu đầu đoạn 2: “Carbon-14 has a half-life of 5, 570 years, which means that after that number of years, half of the carbon- 14 atoms have decayed into nitrogen-14”: Carbon-14 có thời gian bán hủy là 5.570 năm, có nghĩa là sau từng ẩy năm, một nửa các nguyên từ carbon-14 đã bị phân hủy thành nitơ-14. D- Dẫn chứng ở câu cuối đoạn 1 : “Since a radioactive substance such as carbon-14 has a known half-life, [...]”: Bởi vì một chất phóng xạ thí dụ như carbon-14 có thời gian bán hủy như đã biết, [...])→Carbon-14 là một chất phóng xạ.
Còn lại đáp án A không đúng.
Câu 45:
Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions from 43 to 50.
Carbon dating can be used to estimate the age of any organic natural material; it has been used successfully in archeology to determine the age of ancient artifacts or fossils as well as in a variety of other fields. The principle underlying the use of carbon dating is that carbon is a part of all living things on Earth. Since a radioactive substance such as carbon-14 has a known half-life, the amount of carbon-14 remaining in an object can be used to date that object.
Carbon-14 has a half-life of 5,570 years, which means that after that number of years, half of the carbon- 14 atoms have decayed into nitrogen-14. It is the ratio of carbon-14 in that substance that indicates the age of the substance. If, for example, in a particular sample the amount of carbon-14 is roughly equivalent to the amount of nitrogen-14, this indicates that around half of the carbon-14 has decayed into nitrogen-14, and the sample is approximately 5,570 years old.
Carbon dating cannot be used effectively in dating objects that are older than 80,000 years. When objects are that old, much of the carbon-14 has already decayed into nitrogen-14, and the miniscule amount that is left doesn’t provide a reliable measurement of age. In the case of older objects, other age-dating methods are available, methods which use radioactive atoms with longer half-lives than carbon has.
The word “it” in paragraph I refers to________.
Đáp án A.
Từ "it” ở đoạn 1 ám chỉ tới
A. phương pháp xác định niên đại bằng carbon.
B. tuổi.
C. bất kỳ chất hữu cơ tự nhiên.
D. khảo cổ học
Từ “it” đứng đầu câu làm chủ ngữ nên ta đọc lên cả câu phía trên: “Carbon dating can be used to estimate the age of any organic natural material; it has been used successfully in archeology to determine the age of ancient artifacts or fossils as well as in a variety of other fields”: Phương pháp xác định niên đại bằng carbon có thể được sử dụng để ước lượng tuổi của bất kì chất hữu cơ tự nhiên nào, nó được sử dụng thành công trong lĩnh vực khảo cổ học để xác định tuổi của các cổ vật, hóa thạch cổ cũng như là trong nhiều lĩnh vực khác.
Dựa và ngữ cảnh của câu thì “it” chỉ có thể là ám chỉ cho “Carbon dating”.
Câu 46:
Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions from 43 to 50.
Carbon dating can be used to estimate the age of any organic natural material; it has been used successfully in archeology to determine the age of ancient artifacts or fossils as well as in a variety of other fields. The principle underlying the use of carbon dating is that carbon is a part of all living things on Earth. Since a radioactive substance such as carbon-14 has a known half-life, the amount of carbon-14 remaining in an object can be used to date that object.
Carbon-14 has a half-life of 5,570 years, which means that after that number of years, half of the carbon- 14 atoms have decayed into nitrogen-14. It is the ratio of carbon-14 in that substance that indicates the age of the substance. If, for example, in a particular sample the amount of carbon-14 is roughly equivalent to the amount of nitrogen-14, this indicates that around half of the carbon-14 has decayed into nitrogen-14, and the sample is approximately 5,570 years old.
Carbon dating cannot be used effectively in dating objects that are older than 80,000 years. When objects are that old, much of the carbon-14 has already decayed into nitrogen-14, and the miniscule amount that is left doesn’t provide a reliable measurement of age. In the case of older objects, other age-dating methods are available, methods which use radioactive atoms with longer half-lives than carbon has.
The word “underlying” in paragraph I could best be replaced by _______.
Đáp án C.
- underlying (adj): cơ bản, cơ sở = C. serving as a basis for: làm cơ sở cho.
Các đáp án còn lại:
A. bên dưới.
B. yêu cầu.
D. đang được nghiên cứu qua.
Tạm dịch: “The principle underlying the use of carbon dating is that carbon is a part of all living things on Earth": Nguyên tắc làm cơ sở tiền đề cho việc sử dụng phương pháp xác định niên đại bằng carbon đó là carbon là một phần của tất cả các sinh vật sống trên trái đất.
Câu 47:
Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions from 43 to 50.
Carbon dating can be used to estimate the age of any organic natural material; it has been used successfully in archeology to determine the age of ancient artifacts or fossils as well as in a variety of other fields. The principle underlying the use of carbon dating is that carbon is a part of all living things on Earth. Since a radioactive substance such as carbon-14 has a known half-life, the amount of carbon-14 remaining in an object can be used to date that object.
Carbon-14 has a half-life of 5,570 years, which means that after that number of years, half of the carbon- 14 atoms have decayed into nitrogen-14. It is the ratio of carbon-14 in that substance that indicates the age of the substance. If, for example, in a particular sample the amount of carbon-14 is roughly equivalent to the amount of nitrogen-14, this indicates that around half of the carbon-14 has decayed into nitrogen-14, and the sample is approximately 5,570 years old.
Carbon dating cannot be used effectively in dating objects that are older than 80,000 years. When objects are that old, much of the carbon-14 has already decayed into nitrogen-14, and the miniscule amount that is left doesn’t provide a reliable measurement of age. In the case of older objects, other age-dating methods are available, methods which use radioactive atoms with longer half-lives than carbon has.
The word “roughly” in paragraph 2 is closest in meaning to________.
Đáp án C.
- rougth (adv) → C. approximately (adv): xấp xỉ, khoảng chừng.
Các đáp án còn lại:
A. precisely (adv): chính xác.
B. harshly (adv): khắc nghiệt.
D. coarsely (adv): thô, không đúng cách.
Tạm dịch: “If, for example, in a particular sample the amount of carbon-14 is mugth equivalent to the amount of nitrogen-M14, [...]”: Thí dụ như nếu trong một mẫu vật cụ thể lượng cacbon-14 tương đương với lượng nitơ- 14, [...].
Câu 48:
Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions from 43 to 50.
Carbon dating can be used to estimate the age of any organic natural material; it has been used successfully in archeology to determine the age of ancient artifacts or fossils as well as in a variety of other fields. The principle underlying the use of carbon dating is that carbon is a part of all living things on Earth. Since a radioactive substance such as carbon-14 has a known half-life, the amount of carbon-14 remaining in an object can be used to date that object.
Carbon-14 has a half-life of 5,570 years, which means that after that number of years, half of the carbon- 14 atoms have decayed into nitrogen-14. It is the ratio of carbon-14 in that substance that indicates the age of the substance. If, for example, in a particular sample the amount of carbon-14 is roughly equivalent to the amount of nitrogen-14, this indicates that around half of the carbon-14 has decayed into nitrogen-14, and the sample is approximately 5,570 years old.
Carbon dating cannot be used effectively in dating objects that are older than 80,000 years. When objects are that old, much of the carbon-14 has already decayed into nitrogen-14, and the miniscule amount that is left doesn’t provide a reliable measurement of age. In the case of older objects, other age-dating methods are available, methods which use radioactive atoms with longer half-lives than carbon has.
The paragraph following the passage most probably discusses_____.
Đáp án D.
Đoạn văn tiếp theo của đoạn trong bài có thế bản về_______.
A. những chất nào là một phần của tất cả sự sống.
B. làm thế nào cacbon-14 phân hủy thành nitơ-14.
C. tại sao cacbon-14 lại có thời gian bán hủy dài như vậy.
D. các phương pháp xác định niên đại khác.
Đoạn văn nối tiếp theo sau sẽ có nội dung liên quan và nối tiếp với đoạn cuối cùng của bài.
Tạm dịch đoạn cuối: “Carbon dating cannot be used effectively in dating objects that are older than 80,000 years. When objects are that old, much of the carbon-14 has already decayed into nitrogen-14, and the molecule amount that is left doesn’t provide a reliable measurement of age. In the case of older objects, other age-dating methods are available, methods which use radioactive atoms with longer half-lives than carbon has”: Phương pháp xác định niên đại bằng carbon không thể được sử dụng có hiệu quả đối với cổ vật trên 80,000 tuổi. Đối với những cổ vật có tuổi đời như vậy, phần lớn carbon-14 đã hoàn toàn phân hủy thành nitơ-14, và lượng phân tử còn lại không đáng tin cậy để đo lường được độ tuổi. Trong trường hợp đối với những cổ vật có niên đại lâu hơn, những phương pháp xác định niên đại khác mới khả dụng, những phương pháp sử dụng các nguyên tử phóng xạ có thời gian bán hủy lâu hơn carbon. Đối với những cổ vật có tuổi đời lâu hơn 80 000 tuổi phương pháp xác định niên đại bằng carbon không còn khả dụng, cần đến những phương pháp khác.
Câu 49:
Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions from 43 to 50.
Carbon dating can be used to estimate the age of any organic natural material; it has been used successfully in archeology to determine the age of ancient artifacts or fossils as well as in a variety of other fields. The principle underlying the use of carbon dating is that carbon is a part of all living things on Earth. Since a radioactive substance such as carbon-14 has a known half-life, the amount of carbon-14 remaining in an object can be used to date that object.
Carbon-14 has a half-life of 5,570 years, which means that after that number of years, half of the carbon- 14 atoms have decayed into nitrogen-14. It is the ratio of carbon-14 in that substance that indicates the age of the substance. If, for example, in a particular sample the amount of carbon-14 is roughly equivalent to the amount of nitrogen-14, this indicates that around half of the carbon-14 has decayed into nitrogen-14, and the sample is approximately 5,570 years old.
Carbon dating cannot be used effectively in dating objects that are older than 80,000 years. When objects are that old, much of the carbon-14 has already decayed into nitrogen-14, and the miniscule amount that is left doesn’t provide a reliable measurement of age. In the case of older objects, other age-dating methods are available, methods which use radioactive atoms with longer half-lives than carbon has.
It is implied in the passage that .
Đáp án D.
Đoạn văn ngụ ý rằng_________
A. phương pháp xác định niên đại bằng các-bon không được biết đến ngoài ngành khảo cổ học.
B. hóa thạch không thể xác định được niên đại bằng cách sử dụng carbon-14.
C. phương pháp xác định niên đại bằng cácbon không thể sử dụng trên vật có chứa ni-tơ.
D. carbon-14 không có chu kỳ bán rã dài nhất được biết đến.
Từ Question 48 ta suy ra vẫn còn có chất khác có chu kì bán rã dài hơn carbon-14 để xác định được niên đại của những cổ vật trên 80,000 tuổi.
Câu 50:
Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions from 43 to 50.
Carbon dating can be used to estimate the age of any organic natural material; it has been used successfully in archeology to determine the age of ancient artifacts or fossils as well as in a variety of other fields. The principle underlying the use of carbon dating is that carbon is a part of all living things on Earth. Since a radioactive substance such as carbon-14 has a known half-life, the amount of carbon-14 remaining in an object can be used to date that object.
Carbon-14 has a half-life of 5,570 years, which means that after that number of years, half of the carbon- 14 atoms have decayed into nitrogen-14. It is the ratio of carbon-14 in that substance that indicates the age of the substance. If, for example, in a particular sample the amount of carbon-14 is roughly equivalent to the amount of nitrogen-14, this indicates that around half of the carbon-14 has decayed into nitrogen-14, and the sample is approximately 5,570 years old.
Carbon dating cannot be used effectively in dating objects that are older than 80,000 years. When objects are that old, much of the carbon-14 has already decayed into nitrogen-14, and the miniscule amount that is left doesn’t provide a reliable measurement of age. In the case of older objects, other age-dating methods are available, methods which use radioactive atoms with longer half-lives than carbon has.
It can be inferred from the passage that if an item contains more carbon-14 than nitrogen-14, then the item is _______.
Đáp án A.
Có thể suy ra từ đoạn văn rằng nếu một vật có chứa nhiều các-bon 14 hơn ni-tơ 14, thì vật đó_____
A. không đến 5.570 năm tuổi
B. quá lâu đời để có thế xác định được niên đại với carbon-14
C. chứa quá nhiều phóng xạ để được sử dụng bởi các nhà khảo cổ.
D. trên 5.570 năm tuổi.
Dựa vào đoạn 2: “Carbon-14 has a half-life of 5,570 years, which means that after that number of years, half of the carbon- 14 atoms have decayed into nitrogen-14. It is the ratio of carbon-14 in that substance that indicates the age of the substance. If, for example, in a particular sample the amount of carbon-14 is roughly equivalent to the amount of nitrogen-lá, this indicates that around half of the carbon- 14 has decayed into nitrogen-14, and the sample is approximately 5.570 years old”: Carbon-14 có thời gian bán hủy là 5,570 năm, có nghĩa là sau từng ấy năm, một nửa các nguyên tử carbon-14 đã bị phân hủy thành nitơ-14. Chính tỷ lệ carbon-14 có trong chất đó cho thấy độ tuổi của nó. Thí dụ như, nếu trong một mẫu vật cụ thể lượng cacbon-14 tương đương với lượng nitơ- 14, điều đó chỉ ra rằng khoảng một nửa lượng carbon- 14 đã phân hủy thành nitơ-14, và mẫu vật đó có niên đại khoảng 5,570 tuổi.
Nếu một vật có chứa nhiều các-bon 14 hơn ni-tơ 14, thì chứng tỏ nó chưa hoàn tất chu kì bán hủy của mình kéo dài trong 5.570 năm nên vật đó chưa tới 5.570 tuổi.