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    精英家教网 > 高中英语 > 题目详情
    16．Many medical scientists are racing        time to find a cure for H1N1as soon as possible．（　　）
    A．onB．againstC．forD．in

    分析 许多医学科学家们正在争分夺秒地寻找治疗h1n1的方法．

    解答 答案：B   　
    on在…上面；against和…比赛/对抗；in在…内；for为了． 此处，许多医学科学家们正在争分夺秒地寻找治疗h1n1的方法．争分夺秒也就是要与时间赛跑（against the time）．故选B．

    点评 考查介词用法．注意各个介词词义间的区别．

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