【題目】Every year, more than 70, 000, 000 sharks for their fins(魚翅).
A.were killed
B.are killed
C.have killed

【答案】B
【解析】句意:每年有超過70,000,000多頭鯨……。根據(jù)句意可知此處是“被殺害”,是被動語態(tài),由時間詞every year可知句子用一般現(xiàn)在時,故選B。

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