请问OG185

185. 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

This question poses two major problems: parallel structure and precision of expression. In E, the best choice, parallel structure is maintained in the participial phrases introduced by leading and prompting, and the phrase 55-percent increase in delays conveys the meaning more accurately than does the phrase 55 percent more delay(s) in A and B. Also, choice A lacks parallelism. In C and D the infinitive phrase to lead to ... is less idiomatic than the participial phrase leading to .. .'_ Choice C uses the singular delay where the plural is needed to indicate an increase in the number of delays; the phrase increase in delay has no exact meaning.

为什么B没有E好啊？

B leading to 55 percent more delay at airports and prompting

B 的delay 应该用复数吧！

说是B的表达不如E意思清楚~~~

这个我明白，但是OG的解释说B不如D清楚，偶觉得B也满清楚的说，哪位能再解释一下么？

"55 percent more delay "

这里55 percent more 用来修饰delay 会不会很奇怪呢?! 用了more还要不要用than呢?!

还是应该用 a 55 percent increase会好点, 后缀 in delay (在delay这方面)的表达会比较好!!

想请教

"leading to a 55-percent increase in delays at airports and prompting fears among some officials that safety is being compromised."

modify which part of the sentence?

thank a lot!!!

我也来问一个问题，OG上说“In C and D, the infinitive phrase to lead to ..... is less idiomatic than the participial phrase leadting to..."

不明白为什么leadting就比to lead 好？请教NN们