He has made another wonderful discovery, ______ of great importance to science and man.

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问题 He has made another wonderful discovery, ______ of great importance to science and man.

选项 A、which I think is
B、which I think it is
C、of which I think it is
D、I think which is

答案A

解析句意：他又有了一项重大的发现，我认为这项发现对科学和人类非常重要。本题考查非限制性定语从句的用法。定语从句中的which指代之前的先行词discovery，并做从句中的主语成分，I think为从句中的插入语。

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英语

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