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OG42 42.Crowding on Mooreviile's subway frequently leads todelays, because it is difficult for passengers to exitfrom the trains. Subway ridership is projected toincrease by 20 percent over the next 10 years. TheMooreville Transit Authority plans to increase thenumber of daily train trips by only 5 percent over thesame period. Officials predict that this increase issufficient to ensure that the incidence of delays dueto crowding does not increase.
Which of the following, if true, provides the strongest
grounds for the officials' 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.
答案选D，说那些多的人不是都在高峰期所以车次只增加一点点也hold得住，这个理解得通。问题是很多地方把这道题归为加强或者说支持题，包括陈向东的归纳也觉得“provides the strongest grounds for”这个说法是支持题的。但这为什么不是假设题呢？正确答案并未出现新的信息，而且可以取非削弱啊。。。 而且“提供最坚实的基础”不也说明要给的是一个必要条件也就是这是假设题么。。。望解答，拜谢 |
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发表于 2012-10-17 22:49:42
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