2014年成人學(xué)位英語模擬試題及答案（3）
Passage two
We all know that it is possible for ordinary people to make their homes on the equator, although often they may feel uncomfortably hot there. Millions do it. But as for the North Pole—we know that it is not only a dangerously cold place, but that people like you and I would find it quite impossible to live there.
At present time only the scientists and explores can do so, and they use special instrument. Men have been traveling across and around the equators on wheels, on their feet or in ships for thousands of years; but only a few men, with great difficulty and in very recent time, have ever crossed the ice to the North Pole. So it may surprise you to learn that, when traveling by air, it is really safer to fly over the North Pole than over the equator. Of course, it is not true about landings in the polar region, but the weather, if we are flying at a height of 5,000 meters above the Pole is a delight. At 4,000 meters and move above the earth you can always be sure that you will not see a cloud in the sky as your eyes can reach. In the tropics, on the other hand, you are not certain to keep clear of bad weather even at such height such as 18,000 or 20,000 meters.
Aero planes can’t climb as high or as quickly in cold air as in warm. Nor can clouds. In practice, this is an advantage to the aero plane, which is already at a good height when it reaches the polar region and so does not to climb, while at the same time cold air keeps the clouds down low.
21. In the sentence “Millions do it”, “do it ” means ______.
A. feeling uncomfortably hot on the equator
B. flying over the North Pole
C. flying over the equator
D. making homes on the equator
22. The polar region is ______ according to the passage.
A. a good place to land by aero plane
B. a good place to fly over
C. a good place to fly first
D. a good place to live in
23. It is delight to fly at the Pole because _______ .
A. planes fly higher than at the equator
B. the eyes can reach about 4,000 meters
C. planes are clear of bad weather
D. planes fly more quickly than at the equator
24. Aero planes can climb quickly ______.
A. in warm weather B. in cold weather
C. when it reaches the polar region D. only when the clouds are down low
25. Aero planes usually don’t need to climb quickly or fly high in the polar region because ______.
A. they do not land there
B. there are no clouds at all
C. they can cross the ice with special instrument
D. it is very cold there
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