问题
选择题
Every year, more than 70,000,000 sharks ______ for their fins (鱼翅).[ ]
A. were killed
B. have killed
C. are killed
D. will kill
答案
答案：C
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Every year, more than 70,000,000 sharks ______ for their fins (鱼翅).[ ]
A. were killed
B. have killed
C. are killed
D. will kill
答案：C