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    科目： 来源：不详 题型：单选题

    Ladies and gentlemen，please fasten your seat belts．The plane       ．
    A．takes offB．took off
    C．is taking off D．has taken off

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    科目： 来源：不详 题型：单选题

    My little son used to drink a lot of fruit juice but these days he        mineral water．
    A．prefersB．is preferringC．preferredD．had preferred

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    科目： 来源：不详 题型：单选题

    Months ago we sailed ten thousand miles across this open sea，which         the Pacific，and we met no storm．
    A．was calledB．is called
    C．had been called D．has been called

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    科目： 来源：不详 题型：单选题

    It        long before we        the result of the experiment．
    A．will not be；will knowB．is；will know
    C．will not be；know D．is; know

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    科目： 来源：不详 题型：单选题

    －Have you known Dr Jackson for a long time?
    －Yes，since she         the Chinese Society．
    A．has joinedB．joinsC．had joinedD．joined

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    科目： 来源：不详 题型：单选题

    If the weather had been better，we could have had a picnic．But it         all day．
    A．rainedB．rainsC．has rainedD．is raining

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    科目： 来源：不详 题型：单选题

    Great changes have taken place in China since the People’s Republic of China     
    in 1949．
    A．was foundB．foundedC．was foundedD．found

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    科目： 来源：不详 题型：单选题

    Professor Williams keeps telling his students that the future       to the well- educated.
    A．belongsB．is belongedC．is belongingD．will be belonged

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    科目： 来源：不详 题型：单选题

    Jane _____ these families of chimps for many years and helped people understand how much they behave like humans.
    A．had studiedB．studied C．studiesD．has studied

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    科目： 来源：不详 题型：单选题

    —I’ve got to go now.
    — Must you? I _________ you could stay for dinner with us.
    A．think B．have thought C．thoughtD．am thinking

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