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    精英家教网 > 高中英语 > 题目详情
    In Britain,sales of cigarettes have been reduced __________ 30% in the past ten years.
    A．forB．toC．fromD．by
    D
    to表示增加、减少、降低到什么程度,一般包括底数在内。by表示增加或减少的净数,不包括底数,常可省略。句意:在英国,过去十年中,烟的销量下降了30%。
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