Thứ sáu, 01/11/2024
IMG-LOGO

Câu hỏi:

20/07/2024 127

Read the following passage and mark the letter A, B, c, or D to indicate the correct answer to each of the questions.

     Space is a dangerous place, not only because of meteors but also because of rays from the sun and other stars. The atmosphere again acts as our protective blanket on earth. Light gets through, and this is essential for plants to make the food which we eat. Heat, too, makes our environment endurable. Various kinds of rays come through the air from outer space, but enormous quantities of radiation from the sun are screened off. As soon as men leave the atmosphere, they are exposed to this radiation but their spacesuits or the walls of their spacecraft, if they are inside, do prevent a lot of radiation damage.

     Radiation is the greatest known danger to explorers in space. The unit of radiation is called “rem”. Scientists have reason to think that a man can put up with far more radiation than 0.1 rem without being damaged; the figure of 60 rems has been agreed on. The trouble is that it is extremely difficult to be sure about radiation damage - a person may feel perfectly well, but the cells of his or her sex organs may be damaged, and this will not be discovered until the birth of deformed children or even grandchildren.

     Missions of the Apollo flights have had to cross belts of high radiation, and during the outward and return journeys, the Apollo crew accumulated a large amount of rems. So far, no dangerous amounts of radiation have been reported, but the Apollo missions have been quite short. We simply do not know yet how men are going to get on when they spend weeks and months outside the protection of the atmosphere, working in a space laboratory. Drugs might help to decrease the damage done by radiation, but no really effective ones have been found so far.

According to the first paragraph, the atmosphere is essential to man in that_______.

A. it protects him against the harmful rays from space

Đáp án chính xác

B. it provides sufficient light for plant growth

C. it supplies the heat necessary for human survival

D. it screens off the falling meteors

 Xem lời giải

Trả lời:

verified Giải bởi Vietjack

Chọn đáp án A

Câu trả lời này có hữu ích không?

0

Gói VIP thi online tại VietJack (chỉ 400k/1 năm học), luyện tập gần 1 triệu câu hỏi có đáp án chi tiết

ĐĂNG KÝ VIP

CÂU HỎI HOT CÙNG CHỦ ĐỀ

Câu 1:

I remember________ to the seaside when I was a very small child.

Xem đáp án » 25/10/2022 1,452

Câu 2:

Mark the letter A, B, C, or D to indicate the word(s) CLOSEST in meaning to the underlined word(s) in each of the following questions.

The guests at the Japanese Embassy reception enjoyed it very much but refused to eat the raw fish.

Xem đáp án » 25/10/2022 1,074

Câu 3:

“Won't you forget to feed the goldfish?” said Mary.

Xem đáp án » 25/10/2022 816

Câu 4:

You may take________ you please.

Xem đáp án » 25/10/2022 729

Câu 5:

This morning the newspaper had a very interesting________ on the population problem.

Xem đáp án » 25/10/2022 659

Câu 6:

The astronauts orbited the earth in two hours. (took)

Xem đáp án » 25/10/2022 522

Câu 7:

If my grandfather________ alive now, I'm sure he would be proud of me.

Xem đáp án » 25/10/2022 492

Câu 8:

- “Where are we going this weekend?”

     - “_______”

Xem đáp án » 25/10/2022 450

Câu 9:

The family were sleeping. The mouse ran through the kitchen and ate the bread. (While)

Xem đáp án » 25/10/2022 388

Câu 10:

Oh my god! I haven't________ the iron! I must go back right now.

Xem đáp án » 25/10/2022 360

Câu 11:

Read the following passage and mark the letter A, B, C, or D to indicate the correct word or phrase that best fits each of the numbered blanks.

     If you would like to go to a beautiful, faraway place, you should choose the Hawaiian Islands. Located in the middle of the Pacific Ocean, in 1959 the islands (23) _______ the 50th state of the U.S. Of all the Hawaiian islands, Kauai may be the best place for vacation as it is called a tropical (24) _______. With increasing tourist attraction, its population is getting higher especially in hot seasons. Because thick green rainforests cover the island, the air makes your skin soft and smooth. There is (25) _______air pollution here, and no stress. The beaches of Kauai are large part of its beauty; they are all lovely, clean, white sand. If you want to meet colourful undersea (26) _______you may take a short course for diving. You need an enrolment to get training from professional divers. They also make wide explanations (27) _______ the characteristics of the Ocean. As soon as you make a decision, reserve your place, buy your ticket and say goodbye to your stressful city!

Located in the middle of the Pacific Ocean, in 1959 the islands (23) _______ the 50th state of the U.S. Of all the Hawaiian islands,

Xem đáp án » 25/10/2022 334

Câu 12:

Write new sentences as similar as possible in meaning to the original sentences, using the given words in brackets. Do not change the given words in any way.

An experienced tailor can complete a kimono in a single day. (completed)

Xem đáp án » 25/10/2022 330

Câu 13:

Mark the letter A, B, C, or D to indicate the word(s) OPPOSITE in meaning to the underlined word(s) in each of the following questions.

Unluckily the main tourist attraction was lost when the small town was burned down in an accidental fire.

Xem đáp án » 25/10/2022 324

Câu 14:

Mark the letter A, B, C, or D to indicate the most suitable response to complete each of the following exchanges.

- “I don't quite believe in the widespread use of robots in the future.”

     - “_______”

Xem đáp án » 25/10/2022 316

Câu 15:

The livelihood of each species in the vast and intricate assemblage of living things depends on the existence of other organisms.

Xem đáp án » 25/10/2022 281