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The space suits can be adjusted so that the team can reproduce different levels of gravity as if they________in space.
A.are B.has been
C.were D.had been
C
考查虚拟语气以及as if的用法。根据句中的can be adjusted,知这些队员现在还没在太空,是一个与现在事实相反的虚拟语气,故用were。句意为:这些太空服可以调节以便队员们能模仿不同级别的引力,好像他们在太空似的。
答案: C
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