OG12 94

Nickyl90

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
其他问题都懂了可
OG中说C中的to lead
and prompt不平行
可是prompt前的to不是可省可不省的么，为什么说不平行呢？

lenghongmin

如果C对，那么to lead 的逻辑主语是什么呢？用to表示伴随状态表示结果是不对的 应该用分词短语的形式

Nickyl90

LS说的我清楚，可OG给的答案却说C to lead and prompt are not parallel.为什么啊？

wangliming

C选项中的prompt前的to不能省啊，省去了会造成以下的误解的：...increase in delay at (airports and prompt) ? 还是 ...increase in delay at airports and (to) prompt？