23. 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:B,我选了A 因为over the next fifty years 应该对应将来时,所以B不对,A就不存在这个问题.
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