大全866

1.        Tiny quantities of more than thirty rare gases, most of them industrial by-products, threaten to warm the Earth’s atmosphere even more rapidly than carbon dioxide during the next fifty years.

(A) to warm the Earth’s atmosphere even more rapidly than carbon dioxide during the next fifty years

(B) to warm the Earth’s atmosphere even more rapidly over the next fifty years than carbon dioxide will

(C) during the next fifty years to warm the Earth’s atmosphere even more rapidly than carbon dioxide

(D) a warming of the Earth’s atmosphere during the next fifty years even more rapid than carbon dioxide’s（B）

(E) a warming of the Earth’s atmosphere even more rapid than carbon dioxide’s will be over the next fifty years

想确认一下AB的区分方式，

是不是因为比较级后一个对象必须补足助动词，而B加了will故比A好？

但是总觉得B 把over the next fifty years放到than的前面，似乎改变了原来状语修饰关系，因为主句主语用的是一般现在时

此外，想问一下这里的over和during应该不是考点吧？

谢先

谢谢，这个解释很好：）

但还是追根一下，over和during这里应该不存在错误吧？还有那个时间状语的位置有无影响

再谢

我对这一题的时态不太理解。Tiny quantities of more than thirty rare gases, most of them industrial by-products, threaten to warm the Earth’s atmosphere even more rapidly over the next fifty years than carbon dioxide will. 这里面有明确的表将来的时间状语，为什么谓语用一般现在时呢？

顶！牛牛们最近是不是都要考试了，没人答问题了。

形容词短语？那，谓语是什么？

没啥。只不过，时态我还是不明白啊。