Among the four sentences below, Sentence_____expresses the highest degree of possibility. (2016-12)

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问题 Among the four sentences below, Sentence_____expresses the highest degree of possibility. (2016-12)

选项 A、It may take a long time to find a solution to the problem.
B、It might take a long time to find a solution to the problem.
C、It could take a long time to find a solution to the problem.
D、It should take a long time to find a solution to the problem.

答案D

解析 根据上述相关情态动词表示可能性的程度高低排序可知,四个选项中可能性由低到高为:might,may,could,should。故答案为D。但是,通常认为表示“可能”的can主要用于否定句或疑问句,不用于肯定句。can用于肯定句常表示“理论上的可能”,而“理论上的可能”不属于推测性的用法。
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