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    The acid rain is one of the chain reactions that by environmental pollution A. is come about B. is caused C. are given birth D. are brought about 【查看更多】

     

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    The acid rain is one of the chain reactions that ______ by environmental pollution .    
    [     ]

    A. is come about    
    B. is caused  
    C. are given birth  
    D. are brought about

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    The acid rain is one of the chain reactions that ______ by environmental pollution

    　 A. is come about　 B. is caused　 　　　　C. are given birth 　D. are brought about

     

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