问题
选择题
Every year, more than 70.000,000 sharks____for their fins.
A．were killed
B．have killed
C．are killed
D．will kill
答案
答案：C
考查动词的时态与语态。sharks与kill之间存在被动关系，故可排除B、D，根据every year可知用一现在时的被动语态。
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