42. 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.
jerry827 发表于 2009-8-25 16:03
42. Crowding on Mooreville’s subway frequently leads todelays, because it is diffi cult for passeng ...
Spot the question type: Discrepancy + Support
Apparently, if 5% of the daily train increased, it must be true that no delay be happened due to the fact that it won't be difficult for passengers to exit from the train even within the same period that the ridership is projected to increase by 20% over next 10years
So, what we want to do is to find a necessary assumption be guaranteed sufficiently if 5% of the daily train increased, and by which to sufficiently guarantee that by 20% of the ridership increased, it wont be difficult for passengers to exit from the train.
A. Its not about whether they can achieve the plan or not.
B. it its actually a weaken option. If B correct, then it must be true that the original plan is not perfect.
C. it is actually the support of " premise " that crowding must inevitably happened.
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发表于 2009-8-25 16:03:00
