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Scientists think that the continents always where they today. [ ] A. aren’t; are

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Scientists think that the continents always where they today. [ ] A. aren’t; are

Scientists think that the continents ________ always where they ________ today.

[]A.

aren’t; are

B.

aren’t; were

C.

weren’t; are

D.

weren’t; were

试题答案

答案:C

解析:

根据句意“科学家们认为各大洲以前并不是现在这样子”。可以判断第一空用一般过去时,第二空用一般现在时。