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        1. Every year, more than 70.000,000 sharks____for their fins.
          A.were killed
          B.have killed
          C.a(chǎn)re killed
          D.will kill
          C
          考查動詞的時態(tài)與語態(tài)。sharks與kill之間存在被動關(guān)系,故可排除B、D,根據(jù)every year可知用一現(xiàn)在時的被動語態(tài)。
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