B. leads to
C. depends on
D. results in
完型填空 从所给的四个选项中选择最佳答案
How far is the sun from the earth? This is a question you have asked yourself since you began asking anything. In fact, for thousands of years astronomers (41) the same question. But they had no way (42) getting an exact answer (43) the sun was far, far away. Now with the use of radio telescope, they (44) give a very exact answer: the sun is 92,956,000 miles away from the earth.
Can you imagine (45) that is?
The airplane today travels (46) a speed of 700 miles an hour. Imagine (47) you were flying to the sun in this airplane. You could make no stops for rest, (48) for gas or oil, because there would be no place for you to stop. You would fly day and night at (49) speed. Yet by the time you arrived, fifteen years would (50).
The electric train can (51) as fast as 110 miles an hour. If a railway could be built on a sunbeam, it (52) take the train nearly 100 years to (53) the sun. You would get very, very tired even if you lived (54) finish the journey.
(55) it is to the sun! Have you ever thought that the sun is as far away form us as that?
41. A have asked
B. had answered
C. had been asking
D. have been answering
42. A. to
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