求教啊！！！OG-12-94

明月心

94.   The recent surge in the number of airplane flights has
clogged the nation's air-traffic control system, to lead
to 55 percent more delays at airports, and prompts
fears among some officials that safety is being
compromised.

(A)to lead to 55 percent more delays at airports,
and prompts

(B)leading to 55 percent more delay at airports and
prompting

(C)to lead to a 55 percent increase in delay at
airports and prompt

(D)to lead to an increase of 55 percent in delays at
airports, and prompted

(E)leading to a 55 percent increase in delays at
airports and prompting

OG的答案说  B55percent more delay is unclear.  请问NN们怎么个unclear啊。。。

lizhuang0312

在manhattan语法上说：**% more的表达是属于suspect的，正确的应该是a **% increase in...这是一个idiom来的，然后，我觉得他这里说unclear可能是说这个more究竟修饰前面的百分数还是后面的delay有歧义吧，求指正~

明月心

B和E中还有个区别就是delay有一个加了S。
为什么要用复数啊？delay不是即可做可数名词也可作不可数名词么？

lizhuang0312

用复数是说航班延误的情况增多了，不可数是表示时间吧，按照题目的意思也应该是前者