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4.In recent years,the economy of our country____________ rapidly.(  )
A.is increasedB.has increased
C.increasedD.has been increased

分析 在最近几年,我们国家的经济取得了高速发展.

解答 答案:B 根据句中关键词in recent years可知,此句用现在完成时;现在完成时由"have/has+过去分词"构成,主语是the economy of our country,单数名词,用has,increase是主动,不是被动,故选B.

点评 本题是易错题.现在完成时表示动作发生在过去,但与现在的情况有联系,有时无时间状语,有时和一些表示不确定的过去时间状语连用,如:manytimes,just,yet,ever,never,just,already,before,so far,by now等.

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