Câu hỏi:

12/08/2022 375 Lưu

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
In the very distant geological past, all animals were aquatic. The very first vertebrates or animals with backbones, of which we have any fossil record, lived in water. These vertebrates, the fish, were adapted to underwater living. Their streamlined bodies were covered with scales to reduce surface friction: they had muscular tails so that they could swim swiftly in such a dense medium as water; and they were endowed with gills for breathing underwater. Descendants of fishtype ancestors crossed the seashore barrier and accommodated themselves to life on land. As amphibians, they possessed limbs instead of fins and lungs instead of gills. But they never became completely free of the bonds that tied them to the water; even today many amphibians return to the water to lay their eggs. Millions of years after the first clumsy amphibians crawled over the land, newer types of land dwellers appeared, these animals give rise to the present-day reptiles and mammals. They were completely converted for land dwelling, with bodies and biological activities far different from those of fish. With these special adaptations, mammals have been able to colonize the woods and meadows, the deserts and high mountains, often far removed from the sea. 
Of the animals with backbones, the first to appear were ______

A. fish

B. amphibians

C. birds

D. mammals

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Trả lời:

verified Giải bởi Vietjack
Đáp án A
Giải thích: “The very first vertebrates or animals with backbones, of which we have any fossil record, lived in water. These vertebrates, the fish, were adapted to underwater living.”

CÂU HỎI HOT CÙNG CHỦ ĐỀ

Câu 1

A. are wonderful novels

B. tell stories of well-known places

C. are less popular than novels

D. are more valuable than novels

Lời giải

Đáp án C
Thông tin: First in order of popularity is novel-reading.... Next in order of popularity are travel books, biographies and memoirs.
Tạm dịch: Phổ biến nhất là đọc tiểu thuyết... Phổ biến tiếp theo là sách du lịch, tiểu sử và hồi ký.

Câu 2

A. Ordinary people may think that philosophy and science are difficult.

B. Reading about mathematics is mentally entertaining for a mathematician.

C. Philosophers and scientists do not read for pleasure.

D. A more advanced person takes greater pleasure in reading.

Lời giải

Đáp án C
The ordinary man may think that subjects like philosophy or science are very difficult and that if philosophers and scientists read these subjects, it is not for pleasure. But this is not true. Tạm dịch: Người bình thường có thể nghĩ rằng các chủ đề như triết học hoặc khoa học là khó khăn và với các triết gia và các nhà khoa học, đọc những sách này không phải là để vui. Nhưng điều này không đúng

Câu 3

A. a new life

B. our world

C. an opportunity

D. a thrill of pleasure

Lời giải

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Câu 4

A. great

B. limited

C. personal

D. controlled

Lời giải

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Câu 5

A. Bees are able to travel at greater speeds than scientists thought.

B. The bees were able to determine in advance where scientists would place their food.

C. Changing the location of food caused bees to decrease their dance activity.

D. The bees could travel 25% farther than scientists expected.

Lời giải

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Câu 6

The handling and delivery of mail has always been a serious business, underpinned by the trust of the public in requiring timeliness, safety, and confidentiality. After early beginnings using horseback and stagecoach, and although cars and trucks later replaced stagecoaches and wagons, the Railway Mail Service still stands as one of America’s most resourceful and exciting postal innovations. This service began in 1832, but grew slowly until the Civil War. Then from 1862, by sorting the mail on board moving trains, the Post Office Department was able to decentralize its operations as railroads began to crisscross the nation on a regular basis, and speed up mail delivery. This service lasted until 1974. During peak decades of service, railway mail clerks handled 93% of all non-local mail and by 1905 the service had over 12,000 employees. Railway Post Office trains used a system of mail cranes to exchange mail at stations without stopping. As a train approached the crane, a clerk prepared the catcher arm which would then snatch the incoming mailbag in the blink of an eye. The clerk then booted out the outgoing mailbag. Experienced clerks were considered the elite of the Postal Service’s employees, and spoke with pride of making the switch at night with nothing but the curves and feel of the track to warn them of an upcoming catch. They also worked under the greatest pressure and their jobs were considered to be exhausting and dangerous. In addition to regular demands of their jobs they could find themselves the victims of train wrecks and robberies. As successful as it was, “mail-on-the-fly” still had its share of glitches. If they hoisted the train’s catcher arm too soon, they risked hitting switch targets, telegraph poles or semaphores, which would rip the catcher arm off the train. Too late, and they would miss an exchange.
The public expects the following three services in handling and delivery of mail except ______.

A. safety

B. accuracy

C. confidentiality

D. timeliness

Lời giải

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Câu 7

A. prefer to work in pairs or groups

B. have difficulty selecting when given choices

C. lack abilities that other primates have
D. exhibit behavior that indicates certain mathematical abilities

Lời giải

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