He made another wonderful discovery, of great importance to science. A. which I think is B. which I think it is C. which I think it D. I think which is 题目和参考答案——青夏教育精英家教网—

题目内容

He made another wonderful discovery, ________ of great importance to science.

A. which I think is　　　　　　 B. which I think it is

C. which I think it　　　　　　 D. I think which is

答案：A
解析：

本题考查定语从句中插人语的用法，因为插入语必须位于引导词之后，所以D项不对。因为which作定语从句的主语，所以不能再用it，B、C明显不对。

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