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题目
题型:不详难度:来源:
Various efforts over the centuries _________ to predict earthquakes to reduce the damage.
A.are being madeB.have been madeC.were madeD.were being made

答案
B
解析

试题分析:句意:几个世纪以来,已经做了各种努力来预测地震,减少损失。make efforts 做出努力,变被动形式。故选B。
考点: 考查动词时态和语态的用法。
核心考点
试题【 Various efforts over the centuries _________ to predict earthquakes to reduce t】;主要考察你对一般现在时等知识点的理解。[详细]
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