XDF蓝书P26-1

polkme

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

答案是B，请问A和B有啥区别？

cat19bear

难道因为是 一个有will 一个没有will？
等待高手回答。。。

venus2elva

比较后面的助动词尽量补全，如果比较前后的动词相同可以省略，不同的话就要不全。

在这里  to warm the Earth’s atmosphere even more rapidly over the next fifty years than carbon dioxide will(warm)，这样比较好。而且这个will是不能省的。

over the next fifty years 紧跟more rapidly比较好，表示是在后面五十年里面增长更快。A中
during the next fifty years紧跟carbon dioxide 有歧义。