Before they are actually sent up in a spacecraft, ____________(宇航员需经受各种各样的测试).as

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问题 Before they are actually sent up in a spacecraft, ____________(宇航员需经受各种各样的测试).

选项

答案 astronauts are subjected to all kinds of tests

解析考查固定搭配be subjected to。subject意为“使经受，使遭受”，是被动形式，to后跟名词。也可用be exposed to表达“使……显露于，暴露于……”。

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