What does the author mean by saying that electricity is flexible?
Giải bởi Vietjack
Đáp án C
Tác giả có ý gì khi nói rằng điện linh hoạt?
A. Nó rẻ và dễ sử dụng.
B. Nó được sử dụng để điều khiển động cơ.
C. Nó có thể được điều chỉnh dễ sử dụng với các mục đích khác nhau.
D. Nó có thể được thực hiện một cách dễ dàng.
Thông tin: On the other hand, we make use of electricity in thousands of ways. From the powerful voltages that drive our electric trains to the tiny current needed to work a simple calculator, and from the huge electric magnet in steel works that can lift 10 tons to the tiny electric magnet in a doorbell, all are powered by electricity. An electric current can be made with equal ease to heat a huge mass of molten metal in a furnace, or to boil a jug for a cup of coffee.
Tạm dịch: Mặt khác, chúng ta lại sử dụng điện bằng hàng ngàn cách khác nhau. Từ việc dùng điện áp mạnh để điều khiển những đoàn tàu điện hiện đại đến dòng điện nhỏ chỉ để làm một con tính đơn giản, và từ dòng điện từ trường lớn trong các nhà máy thép có thể nâng đến 10 tấn tới dòng từ trường trong một chiếc chuông cửa, tất cả đều là năng lượng điện. Một dòng điện có thể dễ dàng làm nóng chảy một khối lượng kim loại lớn trong lò luyện hay chỉ đơn giản đun sôi lượng nước cho một tách cafe.
Gói VIP thi online tại VietJack (chỉ 200k/1 năm học), luyện tập gần 1 triệu câu hỏi có đáp án chi tiết
Lying to gain personal benefits can be considered as _________ a crime.
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.
Every evening I help my son with his homework alike a teacher.
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.
My grandfather died because of the war. However, his great spirit was _________ for all generations.
You shouldn’t be too interested in foreign jobs, __________ home is best!
He both looks like Korean and Chinese, so everyone still confuses about his ________.
Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions.
John is the first person _________ documents from the others in our group.
I _______ a phone call because I felt worried about Nhung Glenda’s surgeon.
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 34 to 38.
WAYS TO IMPROVE YOUR MEMORY
A good memory is often seen as something that comes naturally, and a bad memory as something (34) _______ 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 the US. This no doubt explains the reason why schoolboys remember football results effortlessly but struggle (35) _____ dates
from their history lessons! Take an active interest in what you want to remember and (36) ______ on it consciously. 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 rate and sends (37) ________ oxygen to your brain, and that makes your memory work better. Exercise also reduces stress, which is very bad for the memory.
The old saying that - eating fish makes your brain may be true after all. Scientists have discovered that the fats found in fish like tuna, sardines, and salmon - (38) __________ 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)
“I have stolen documents to sell online since last year” Lien said.
Math 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.
The story was that of a little girl who was born in a well-to-do family and was a top performer in her studies.
