He made another wonderful discovery, ______of great importance to science.

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问题 He made another wonderful discovery, ______of great importance to science.

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

答案A

解析此题考查which引导的定语从句用法。which引导的定语从句在从句中可以作主语、宾语等。be of+抽象名词相当于该名词的形容词形式，be of great importance=bevery important。

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英语

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