明天就考了呀！一直没想明白的一道CR prep==

summer虾

20.    (28411-!-item-!-188;#058&003617)

For years the beautiful Renaissance buildings in Palitito have been damaged by exhaust from the many tour buses that come to the city.  There has been little parking 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 parking that accommodates a third of the tour buses, so damage to Palitito's buildings from the 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 to Palitito's buildings.
(B) Palitito's Renaissance buildings are not threatened by pollution other than engine exhaust.
(C) Tour buses typically spend less than one-quarter of the time they are in Palitito transporting passengers from one site to another.
(D) More tourists come to Palitito by tour bus than by any other single means of transportation.
(E) Some of the tour buses that are unable to find parking drive around Palitito while their passengers are visiting a site.

C

summer虾

顶啊~
牛牛G友们看过来啊看过来~
哪怕给个中文翻译都好啊==

草稿纸

A 反对前提，错
B 说的就是bus exhaust，所以无关
C 少于1/4时间在路上，就是说少于1/4的车子在路上开，其他3/4正好停在停车场，而不用停在路边空转
D 无关
E 路上转和路边空转马达是一样的，无关

summer虾

A 反对前提，错
B 说的就是bus exhaust，所以无关
C 少于1/4时间在路上，就是说少于1/4的车子在路上开，其他3/4正好停在停车场，而不用停在路边空转
D 无关
E 路上转和路边空转马达是一样的，无关

-- by 会员 草稿纸 (2010/4/21 22:28:41)

谢啦~可还是不太懂，卡住了
这题其实突然想到XDF的一个方法，也是我到现在唯一想到的所谓技巧——说是什么会用到加减乘除的运算云云~

草稿纸

考场上没有那么多时间仔细想的，这个题其他明显错，直接选这个了，最沾边