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 Hemadeanotherwonderfuldiscovery,

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问题详情:

 Hemadeanotherwonderfuldiscovery,

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

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

C. which I think  D. I think which is

【回答】

B

知识点:定语从句

题型:选择题

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