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单选题（共45题，90.0分） 35.（2.0分）Diamond（）in Brazil in 1971.A. is foundB. has been foundC. was foundD. had been found

单选题（共45题，90.0分） 35.（2.0分）Diamond（）in Brazil in 1971.

A. is found

B. has been found

C. was found

D. had been found

题目解答

答案

C. was found

解析

本题考查动词时态和被动语态的正确使用。解题关键在于：

时间状语：句中明确给出时间in 1971，属于过去时间点，因此应选择一般过去时。
被动语态结构：主语Diamond是单数，需使用was + 过去分词形式。

选项分析

A. is found：一般现在时，与时间in 1971矛盾。
B. has been found：现在完成时，表示动作与现在有联系，但时间in 1971是过去确定时间点，不符合。
C. was found：一般过去时被动语态，符合时间状语和语境。
D. had been found：过去完成时，表示“过去的过去”，但题目未体现时间先后关系。

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