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    科目： 来源：不详 题型：单选题

    We should learn how to value what we have ______ it is too late.
    A．whenB．afterC．beforeD．until

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    科目： 来源：不详 题型：单选题


    32．I haven’t seen          Maggie since I came here.
    A．as lovely a girl asB．so a lovely girl as
    C．a girl as lovely asD．as a lovely girl as

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    科目： 来源：不详 题型：单选题


    . With the introduction of the computer, there is no complicated problem ________ can be solved in a few hours.
    A．asB．whichC．thatD．but

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    科目： 来源：不详 题型：单选题


    ______ he was ill I was expected to take his place greatly surpried me for I didn’t have much work experience.
    A．IfB．If thatC．ThatD．That if

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    科目： 来源：不详 题型：单选题


    It was not until I started my own career that I realized     precious time I had wasted before.
    A．soB．howC．whatD．that

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    科目： 来源：不详 题型：单选题


    The US auto (汽车) industry, a symbol of the American spirit, narrowly escaped a sudden breakdown, _____ China has become the world’s top automaker.
    A．whenB．whileC．butD．although

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    科目： 来源：不详 题型：单选题


    The food was good, _______ he had little appetite (食欲).
    A．soB．otherwiseC．howeverD．but

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    科目： 来源：不详 题型：单选题


    —Where is that report?
    —I brought it to you _______ you were in Mr. Black’s office yesterday.      
    A．ifB．becauseC．whenD．before

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    科目： 来源：不详 题型：单选题


    Sally worked late in the evening to finish her report _______ her boss could read it first next morning.
    A．so thatB．becauseC．before D．now that

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    科目： 来源：不详 题型：单选题


    Some people waste a lot of food ________ others haven’t enough to eat.
    A．howeverB．whenC．asD．while

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