Question

The astronauts found that ______ the spaceship went further and further into space, it became more and more difficult to control its own movements

1. A.
   if
2. B.
   till
3. C.
   as
4. D.
   while

Answer 1

C
试题分析：句意：宇航员发现随着宇宙飞船更远地进入太空时，它变得越来越难控制它的运动轨迹。这里that引导的是宾语从句。这个宾语从句是复合句，逗号后是主句，as the spaceship went further and further into space 是从句。A. if如果； B. till直到； C. as随着； D. while当……时候。根据句意故选C。
考点：考查连词的用法。