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【题目】There is no doubt that climate all over the world ______ greatly in recent years.

A. had changedB. is changing

C. changedD. has been changing

【答案】D

【解析】

考查时态。句意:毫无疑问,最近几年全球气候一直在剧烈变化。本句的时间状语in recent years通常与现在完成时连用,表示一段时间以来一直发生的事情,ABC三项都不是现在完成时。现在完成进行时强调从过去开始发生的事情一直延续到现在,与语境相符,故选D项。

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