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WhothefightagainsttheH1N1fluitnotbeenforthechinesescientists'greatefforts?A.couldhavewon;hadB.wouldwin;hadC.wouldhavewon;hasD.wouldwin;has

题目详情
Who__the fight against the H1N1 flu __ it not been for the chinese scientists' great efforts?
A.could have won;had B.would win;had C.would have won;has D.would win;has
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答案和解析
A
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