For years thebeautiful Renaissance buildings in Palitito have been damaged by exhaust fromthe many tour buses that come to the city. There has been little parking space, so most buses have idled at thecurb during each stop on their tour, and idling produces as much exhaust asdriving. The city has now providedparking that accommodates a third of the tour buses, so damage to Palitito'sbuildings from the buses' exhaust will diminish significantly.
Which of thefollowing, if true, most strongly supports the argument?
(A) The exhaust fromPalitito's few automobiles is not a significant threat to Palitito's buildings.
(B) Palitito'sRenaissance buildings are not threatened by pollution other than engineexhaust.
(C) Tour busestypically spend less than one-quarter of the time they are in Palititotransporting passengers from one site to another.
(D) More tourists cometo Palitito by tour bus than by any other single means of transportation.
(E) Some of the tourbuses that are unable to find parking drive around Palitito while theirpassengers are visiting a site.
提问：C从哪方面support了结论？为什么出现一个具体数字1/4，和数字有关系吗？不管bus花多少时间载客，只要有了停车场都会减少idle的时间。
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发表于 2012-1-2 14:44:39
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