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题目
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Experiments of this kind ___in both the U.S and Europe well before the Second World War
A.had conductedB.have conducted
C.have been conductedD. had been conducted

答案
D
解析

试题分析:句意:在二次世界大战之前这种实验在欧洲和美国进行得很好。the Second World War发生在过去,又因为before在…….之前,所以表示的是过去的过去,Experiments of this kind与conduct是被动关系,故用被动语态。根据句意故选D。
核心考点
试题【Experiments of this kind ___in both the U.S and Europe well before the Second Wo】;主要考察你对一般现在时等知识点的理解。[详细]
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