一打白骨精： 大全866

alanguo

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。B中后面有will，但前半句threaten to warm...没有will，不对称嘛。当然A中答案正如大全的解释，会引起歧义。

triwater_yu

threaten to warm和will warm对应

Ca va?

xiangleilei

threaten  做不及物动词有即将发生的意思，不知道是否正确~~