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    题目列表(包括答案和解析)

    It is predicted that a comet will probably hit the earth in about 10 years and scientists all over
    the world are thinking about possible ways to ________it from happening. Which of the following
    is not OK?   
    [     ]

    A. protect    
    B. stop    
    C. keep    
    D. prevent

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    It is predicted that a comet will probably hit the earth in about 10 years and scientists all over the world are thinking about possible ways to ________it from happening. Which of the following is not OK?

    　 A. protect　 　　　　B. stop　 　　　　　C. keep　 　　　　　D. prevent

     

    查看答案和解析>>


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