摘要： 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

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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

 

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