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Crowding on Mooreville's subway frequently leads to delays, because it is difficult 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. Officials 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 officials' prediction?

正确答案: D

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OG12 CR42 求解释~

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楼主
发表于 2012-8-29 12:42:06 | 只看该作者 回帖奖励 |倒序浏览 |阅读模式
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 sufficient 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.

答案是D,这个我可以理解,但是OG中对B的解释是这样的:Increasing the number of bus trips on routes that connect to subways would be likely to lead to more people to ride subways.为什么提高了the number of bus trip反而导致更多人坐地铁啊?(对题目本身和答案没有不理解的,就是想把这个解释的逻辑搞明白,求指教~)
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沙发
发表于 2012-9-1 17:37:22 | 只看该作者
看来,你并没有读懂这道题目想说啥

本题要解决Crowding拥挤,要么增加车,要么关注拥挤的时间点;

你的思路只聚焦增加车上了,所以就钻在B项上,拔不出来

可是题干中说了,车增加的没人增加的快,所以B是不对的

D项是聚焦在 off-peak hours时间,所以增加很少的车就解决了Crowding
板凳
发表于 2012-9-2 03:52:09 | 只看该作者
楼主:增加的不是可替代subway的bus trip service,而是bus trips on the route that CONNECT to subways。
请注意大写的CONNECT。
地板
发表于 2012-10-6 09:44:52 | 只看该作者
首先,D肯定更符合加强的需求。

但个人以为B也是可以说得通的,增加了bus trips(频次),可以理解为滞留在车站上的人就少了,而增加bus lines(线路)到有可能导致乘地铁的人更多,但其实也未必,也许新增的线路还导致分流了可以选择换乘的人员,这个有不确定性。

个人觉得,有不少逻辑题,出题者的考虑未必很严密,至少大家对一些常识的理解并不完全相同。不过在考试时,时间很紧,我们挑出相对最合理的即可,没必要跟GMAT老头较真。
5#
发表于 2012-11-11 03:39:28 | 只看该作者
2楼正解。
6#
发表于 2014-7-11 18:58:38 | 只看该作者
slgbond 发表于 2012-9-1 17:37
看来,你并没有读懂这道题目想说啥本题要解决Crowding拥挤,要么增加车,要么关注拥挤的时间点;你的思路只 ...


我想问D选项如果只是把时间改在非高峰时间,那么高峰时间的人流拥挤问题还是没解决啊

不好意思,看到了增加的是非高峰期的人
7#
发表于 2014-10-24 09:25:07 | 只看该作者
请注意题目结论中的due to,典型的因果结论型,只要关注因果关系本身就可以了,加强因果关系的方法:消除他因,有因有果,无因无果,因果没有倒置,或显示数据资料没有问题。
D选项说明数据资料没有问题:增加的乘客都在非高峰期——>拥挤确实没有增加。正确。
8#
发表于 2015-12-14 11:00:52 | 只看该作者
D选项后面有when给了一个说明,现在非高峰期的train利用率不高。如果预计的人数增长都是在非高峰期,而非高峰期的车子现在还没有被完全利用,那么就解释了为什么可以只增长5%的车次去匹配20%的乘客增长了。
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