It is not easy( )the answer to the difficult math problem.A、to figure outB、figu

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问题 It is not easy( )the answer to the difficult math problem.

选项 A、to figure out
B、figuring out
C、figure out
D、being figured out

答案 A

解析本题考查非谓语动词的用法，属于“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。因此A为正确答案。

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