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It ?????????? be the vocabulary that caused you the problem in the exercise because you know a lot of words.

A. may ????????????? B. couldnt ????????????? C. should ????????????? D. neednt

 

【答案】

B

【解析】

试题分析:A、可以;可能;B、不会,不可能;C、应该;D、不必。句意:不可能是词汇导致你在考试中出这个问题,因为你知道很多单词。这里的could用于否定句表示否定推测不可能,结合语境可知选B

考点:考查情态动词

 

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