We cannot accurately predict how much carbon dioxide( )by factor

作者:高老师 浏览 2

We cannot accurately predict how much carbon dioxide( )by factories will remain permanently in the air.


A、

released


B、

to release


C、

releasing


D、

being released


【正确答案】:A
【题目解析】:

carbon dioxide(二氧化碳)和release(释放)之间是被动关系,不选BC,这里并不强调正在被释放,所以选A。句意:我们无法准确预测有多少工厂释放出的二氧化碳将永久留在空气中。


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