He made another wonderful discovery, of great importance to science. A. which I
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He made another wonderful discovery, ________ of great importance toscience.
A. which I think isB. which I think it is
C. which I think it D. I think which is
试题答案
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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