摘要： Many environmentalists think that carbon dioxide is for the global warming, which affects billions and billions of species across the globe. A. blamed B. to be blamed C. to blame D. blaming

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Many environmentalists think that carbon dioxide is _______ for the global warming, which affects billions and billions of species across the globe.
[     ]

A. blamed  
B. to be blamed  
C. to blame 
D. blaming

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Many environmentalists think that carbon dioxide is _______ for the global warming, which affects billions and billions of species across the globe.

A. blamed　 　　　　 B. to be blamed　 　　C. to blame　 　　　 D. blaming

 

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