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下面这题看了解答也不懂啊
为什么解释里直接就说The new parking spaces will allow a third of the tour buses to spend 75 percent of their time with their engines off, causing no damage at all.
那个75percent怎么出来的啊
跪求大神解答 感谢感谢
32. For years the beautiful Renaissance buildings in Palitito have been damaged byexhaust from the many tour buses that come to the city. There has been littleparking space, so most buses have idled at the curb during each stop on their tour,and idling produces as much exhaust as driving. The city has now provided parkingthat accommodates a third of the tour buses, so damage to Palitito’s buildings fromthe buses’ exhaust will diminish significantly.
Which of the following, if true, most strongly supports the argument?
(A) The exhaust from Palitito’s few automobiles is not a significant threat toPalitito’s buildings.
(B) Palitito’s Renaissance buildings are not threatened by pollution otherthan engine exhaust.
(C) Tour buses typically spend less than one-quarter of the time they are inPalitito transporting passengers from one site to another.
(D) More tourists come to Palitito by tour bus than by any other singlemeans of transportation.
(E) Some of the tour buses that are unable to find parking drive aroundPalitito while their passengers are visiting a site.
Argument Evaluation
Situation Tour buses have damaged Renaissance buildings with their exhaustfumes because lack of parking has kept the buses idling at curbs.
Providing new parking for a third of the buses should significantlyreduce the damage caused by the exhaust.
Reasoning
What point strengthens the argument? The argument for reduceddamage relies on the reduction of the vehicles’ exhaust fumes. Anyadditional evidence regarding the extent to which the vehicularemissions are likely to be reduced also supports the argument forthe benefits of the new parking spaces. Learning that tour busesspend not just a few minutes but most of their time idling at thecurb strengthens the argument. The new parking spaces will allowa third of the tour buses to spend 75 percent of their time with theirengines off, causing no damage at all.
A If automobile exhaust is not a threat, the argument is not affected.
B This statement does not address the question of whether the new parkingwill reduce the damage caused by engine exhaust from the buses.
C Correct. This statement properly cites a factor that supports theargument: since most of the buses’ time has been spent producing damagingexhaust, the new parking should reduce the damage significantly.
D This statement about tourists’ chosen means of transportation isirrelevant to the issue of what the buses do while in the city.
E It is given that the new parking will only provide space for a third of thebuses, and thus some buses will continue to idle and some to drive around,continuing to contribute equally to the building damage. This statementdoes not strengthen the argument.
The correct answer is C.
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发表于 2016-4-4 16:19:30
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