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单选题成人英语三级

2017-03-26

It is not easy______ the answer to the difficult math problem.

A．to figure out

B．figuring out

C．figure out

D．being figured out

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参考答案

A

答案解析

【译文】做出这道数学难题很不容易。
【解析】本题考查非谓语动词的用法。本题为“it+be+形容词+不定式”的结构，其中it作形式主语，真正的主语是后面的不定式。故选A。

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