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题目
题型:不详难度:来源:
Earth is believed ______ by an object the size of Mars at some point in the distant past before itssurface cooled.
A.to be hitB.to have hit
C.to have been hit D.to hit

答案
C
解析

试题分析:句意:人们相信,地球在其表面冷却之前被类似火星大小的物体撞击过。分析语境可知主语Earth和hit之间为动宾关系,所以用被动语态。“被撞击”be hit这个动作发生在“冷却”cool这个动作之前,故用完成时态。故选C。
核心考点
试题【Earth is believed ______ by an object the size of Mars at some point in the dist】;主要考察你对现在分词等知识点的理解。[详细]
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题型:不详难度:| 查看答案
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题型:不详难度:| 查看答案
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