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    科目： 来源：不详 题型：单选题

    _________ you take an active part in physical activity ______ be able to keep fit and stay healthy.
    A．Only if; you willB．Only if; will you
    C．Unless; you willD．Unless; will you

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    科目： 来源：不详 题型：单选题

    Not until he left his home _____ to know how important the family was for him.
    A．did he beginB．had he begun
    C．that he beganD．he had begun

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    科目： 来源：不详 题型：单选题

    Strange as it might be, the suggestion he made      we make good use of the equipment is acceptable.
    A．thatB．whichC．whyD．how

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    科目： 来源：不详 题型：单选题

    Only after Mary read her essay the second time            the spelling mistake.
    A．did she notice.B．she notice.
    C．does she noticeD．she has noticed

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    科目： 来源：不详 题型：单选题

    As is known to us all, under no circumstances______ temporary economic development at the expense of the environment and resources.
    A．should we seekB．we should seek
    C．we had soughtD．had we sought

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    科目： 来源：不详 题型：单选题

    Though ____ the dangers of smoking to their health, smokers still find it hard to give up smoking.
    A．awareB．aware ofC．are aware ofD．be aware of

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    科目： 来源：不详 题型：单选题

    Have you heard Mary was robbed during her trip to Egypt? Not only _________ her money, but she was nearly killed.
    A．she lostB．had she lost
    C．she had lostD．did she lose

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    科目： 来源：不详 题型：单选题

    While_________in Britain, he made friends with the natives there.
    A．working B．worked C．he worksD．he is working

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    科目： 来源：不详 题型：单选题

    There is no doubt      our educational system leaves something to be desired．
    A．whatB．whether C．ifD．that

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    科目： 来源：不详 题型：单选题

    The door burst open and________, shouting with anger.
    A．rushed in a crowdB．in rushing a crowd
    C．in rushed a crowdD．in a crowd did rush

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