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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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