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。。。 作者: tracy214wxy 时间: 2011-9-2 21:23