【題目】More than 70,000,000 sharks ______ every year. It's really time for us to do something.
A.kill
B.killed
C.are killed
D.were killed

【答案】C
【解析】句意:每年都有超過7千萬頭鯊魚被殺以獲得它們的鰭片。這是一個事實的描述,用一般現(xiàn)在時;該句應(yīng)該是鯊魚被殺害,因此是被動語態(tài),所以答案是C

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