题目内容
13. Every year,more than 70,000,000 sharks for their fins.
A. were killed B. have killed
C. are killed D. will kill
13. C
13. C 考査动词的时态与语态。
sharks与 kill之间存在被动关系,故可排除B、D两项; 根据every year可知,用一般现在时的被动 语态。故选C.
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