OG 42, 怎么也想不明白。。大牛指教！

clairexuan9

Crowding on Mooreville’s subway frequently leads to delays, because it is diffi cult for passengers to exit from
the trains. Subway ridership is projected to increase by 20 percent over the next 10 years. The Mooreville
Transit Authority plans to increase the number of daily train trips by only 5 percent over the same period.
Offi cials predict that this increase is suffi cient to ensure that the incidence of delays due to crowding does not
increase.
Which of the following, if true, provides the strongest grounds for the offi cials’ prediction?
(A) By changing maintenance schedules, the Transit Authority can achieve the 5 percent increase in train trips
without purchasing any new subway cars.
(B) The Transit Authority also plans a 5 percent increase in the number of bus trips on routes that connect to
subways.
(C) For most commuters who use the subway system, there is no practical alternative public transportation
available.
(D) Most of the projected increase in ridership is expected to occur in off-peak hours when trains are now
sparsely used.
(E) The 5 percent increase in the number of train trips can be achieved without an equal increase in Transit
Authority operational costs.

Delays due to crowding probably would increase if the extra 20 percent
total ridership occurred at typically busy times, 这句话想不明白，如果20%在busy times加入了，不是会减少delay的么？。。。

clairexuan9

哦哦！ ridership是乘客啊...我还以为是车呢....懂了...

xn8510

在busy times加入的20%，是ridership（乘客），上班高峰期乘客数量增加，delay增加~~~