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题目
题型:不详难度:来源:
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

答案
C
解析
考查固定句型。It be 一段时间 before从句。意为:一段时间以后某事才发生。Before从句里用一般现在时代替将来时,主句用将来时。故C正确。
核心考点
试题【It        long before we        the result of the experiment.A.will not be;will 】;主要考察你对一般现在时等知识点的理解。[详细]
举一反三
-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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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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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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Professor Williams keeps telling his students that the future       to the well- educated.
A.belongsB.is belongedC.is belongingD.will be belonged

题型:不详难度:| 查看答案
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

题型:不详难度:| 查看答案
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