IMG-LOGO

Câu hỏi:

11/07/2024 168

Read the following passage and mark the letter A, B, C or D to indicate the correct answer to each of the questions from 36 to 42.

Life originated in the early seas less than a billion years after the Earth was formed. Yet another three billions years were to pass before the first plants and animals appeared on the continents. Life's transition from the sea to the land was perhaps as much of an evolutionary challenge as was the genesis of life.

What forms of life were able to make such a drastic change in lifestyle? The traditional view of the first terrestrial organisms is based on megafossils - relatively large specimens of essential whole plants and animals. Vascular plants, related to modern seed plants and ferns, left the first comprehensive megafossil record. Because of this, it has been commonly assumed that the sequence of terrestrialization reflected the evolution of 10 modern terrestrial ecosystems. In this view, primitive vascular plants first colonized the margins of continental waters, followed by animals that fed on the plants, and lastly by the animals that preyed on the plant-eaters. Moreover, the megafossils suggest that terrestrial life appeared and diversified explosively near the boundary between the Silurian and the Devonian periods, a little more than 400 million years ago.

Recently, however, paleontologists have been taking a closer look at sediments below this Silurian- Devonian geological boundary. It turns out that some fossils can be extracted from these sediments by putting the rock in an acid bath. The technique has uncovered new evidence from sediments that were deposited near the shores of the ancient oceans - plant microfossils and microscopic pieces of small animals. In many instances, the specimens are less than one-tenth of a millimeter in diameter. Although they were entombed in the rocks for hundreds of millions of years, many of the fossils consist of the organic remains of the organism.

These discovered fossils have not only revealed the existence ofpreviously unknown organisms, but have also pushed back these dates for the invasion of land by multicellular organisms. Our view about the nature of the early plants and animal communities are now being revised. And with those revisions come new speculations about the first terrestrial life-forms

The word "drastic" is closest in meaning to ________.

A. widespread

B. radical

Đáp án chính xác

C. progressive

D. risky

Trả lời:

verified Giải bởi Vietjack

Đáp án B

Dịch nghĩa: Từ “drastic” [mạnh mẽ, quyết liệt] gần nghĩa nhất với _________.

A. phổ biến                                                        

B. hoàn toàn, căn bản, lớn

C. tiến tới                                                           

D. liều lĩnh

Giải thích: drastic change = radical change: thay đổi lớn, từ căn nguyên, hoàn toàn khác so với ban đầu

Câu trả lời này có hữu ích không?

0

CÂU HỎI HOT CÙNG CHỦ ĐỀ

Câu 1:

Many places of history, scientific, cultural, or scenic importance have been designated national monuments.

Xem đáp án » 18/06/2021 17,365

Câu 2:

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 from 31 to 35.

KEEPING FIT

          Bodies are made to move! They are not (31) ________ for sitting around in front of the television or reading magazines. Keeping fit doesn't mean have to be a super-athlete, and even (32) ________ exercise can give you a lot of fun. When you are fit and healthy, you will find you look better and feel better. You will develop more energy and self-confidence.

Every time you move, you are exercising. The human body is designed to bend, stretch, run, jump and climb. (33) ________it does, the stronger and fitter it will become. Best of all, exercise is fun. It's what your body likes doing most-keeping on the move.

Physical exercise is not only good for your body. People who take regular exercise are usually happier, more relaxed and more alert than people who sit around all day. Try an experiment-next time you are in a bad mood, go for a walk or play a ball game in the park. See how much better you feel after an hour.

            A good (34) ________of achievement is yet another benefit of exercise. People feel good about themselves when they know they have improved their fitness. People who exercise regularly will tell you that they find they have more energy to enjoy life. So have (35) ________you'll soon see and feel the benefits

Điền vào ô 35

Xem đáp án » 18/06/2021 10,850

Câu 3:

In England, schooling is mandatory for all children from the age of 5 to 16

Xem đáp án » 18/06/2021 6,295

Câu 4:

Mark the letter A, B, C or D to indicate the word that differs from the other three in the position of the primary stress in each of the following questions

Xem đáp án » 18/06/2021 3,931

Câu 5:

There was _______ fuel in the car. Therefore, we had to stop midway to fill some

Xem đáp án » 18/06/2021 3,182

Câu 6:

Before he went on vacation, Peter left explicit instructions for the decoration of his office.

Xem đáp án » 18/06/2021 3,056

Câu 7:

For me, the film didn't   ________ all the enthusiastic publicity it received

Xem đáp án » 18/06/2021 2,743

Câu 8:

I ________ you don't make as much profit this year!

Xem đáp án » 18/06/2021 2,493

Câu 9:

My uncle wishes his son ________ much time when he grows up

Xem đáp án » 18/06/2021 2,084

Câu 10:

"All right, it's true. I was nervous," said the girl.

Xem đáp án » 18/06/2021 1,949

Câu 11:

The accident _______ was the mistake of the driver

Xem đáp án » 18/06/2021 1,517

Câu 12:

In future, cars will still be _________ us, but, instead of petrol, they will run ________anything from electricity to methane gas

Xem đáp án » 18/06/2021 1,473

Câu 13:

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 from 31 to 35.

KEEPING FIT

          Bodies are made to move! They are not (31) ________ for sitting around in front of the television or reading magazines. Keeping fit doesn't mean have to be a super-athlete, and even (32) ________ exercise can give you a lot of fun. When you are fit and healthy, you will find you look better and feel better. You will develop more energy and self-confidence.

Every time you move, you are exercising. The human body is designed to bend, stretch, run, jump and climb. (33) ________it does, the stronger and fitter it will become. Best of all, exercise is fun. It's what your body likes doing most-keeping on the move.

Physical exercise is not only good for your body. People who take regular exercise are usually happier, more relaxed and more alert than people who sit around all day. Try an experiment-next time you are in a bad mood, go for a walk or play a ball game in the park. See how much better you feel after an hour.

            A good (34) ________of achievement is yet another benefit of exercise. People feel good about themselves when they know they have improved their fitness. People who exercise regularly will tell you that they find they have more energy to enjoy life. So have (35) ________you'll soon see and feel the benefits

Điền vào ô 33

Xem đáp án » 18/06/2021 1,227

Câu 14:

My relative _______ you met yesterday is an engineer

Xem đáp án » 18/06/2021 1,076

Câu 15:

I'm sorry I snapped at you like that, but I'm in a bad    ________.

Xem đáp án » 18/06/2021 1,064

Câu hỏi mới nhất

Xem thêm »
Xem thêm »