2. 外语
  3. Evidence (has been put forward) (showing) that astronauts (exposed) to long periods of weightlessness have (affected) quite seve

Evidence (has been put forward) (showing) that astronauts (exposed) to long periods of weightlessness have (affected) quite seve

admin2008-11-13  54
问题 Evidence (has been put forward) (showing) that astronauts (exposed) to long periods of weightlessness have (affected) quite severely.
选项 A、has been put forward
B、showing
C、exposed
D、affected
答案D
解析 宾语从句主语that astronauts和谓语动词affect是被动关系，所以要改“have affected”为“have been affected”
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