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

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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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