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 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 officials' prediction?
By changing maintenance schedules, the Transit Authority can achieve the 5 percent increase in train trips without purchasing any new subway cars.
The Transit Authority also plans a 5 percent increase in the number of bus trips on routes that connect to subways.
For most commuters who use the subway system, there is no practical alternative public transportation available.
Most of the projected increase in ridership is expected to occur in off-peak hours when trains are now sparsely used.
The 5 percent increase in the number of train trips can be achieved without an equal increase in Transit Authority operational costs.
情景:Mooreville的地铁由于乘客人数众多而比较堵塞。在未来的十年里,乘客人数还要增长20%。为了保证地铁不进一步堵塞,政府机构打算增开5%批次的列车。
推理:推理文段中描述了一个方案,即,政府机构打算增开5%批次的列车。问题要我们评估这个方案是否可以达成目标,因此,推理文段的推理方式为方案推理。
推理结构为:
provides the strongest grounds for the officials' prediction
老师,这个题目的如上问法,是不是就邀请我们必须选出“加强”项?假如还有个选项也符合CQ的要求,但是削弱方向的,也不能选?
感觉E不正确是因为:虽然说到成本不会增加,但这题更考虑的是人会不会拥挤,D更优秀,E在干扰视线。“于题目中已经限定了评估方向为CQ1” 这个说法稍微有点模糊不强吧
OG答案中B的解释,增加沿途公交车会使得更多人乘坐地铁,这会使得预测更不可能发生。可是另一个角度来说,有了公交车不是可以分散一部分客流量吗,让其他人去坐公交车,这样拥挤的现象不就可以有所缓解?这个现象无关我是明白的,就是OG的解释不太清楚,希望老师能解答,谢谢!
可能是因为公交车5%增加不能解决20%客流增加的问题
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方案推理不是要选项里出现方案吗?似乎只有E出现了呢。而且E选项的解释有点不明白,为啥说题目限定了评估方向为CQ1所以不考了副作用?题目怎么会限定评估方向呢?
题目最后的结论是:Officials predict that this increase is sufficient to ensure that the incidence of delays due to crowding does not increase. 让我们评估这个结论。结论已经说了,我只要求sufficient to ensure目标被达。
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对啦。
由于题目中已经限定了评估方向为CQ1,所以不考虑本选项所提及的副作用问题。