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标题: prep1-20 还是不太懂~ [打印本页]

作者: Fuckitup 时间: 2010-11-25 07:06 标题: prep1-20 还是不太懂~

20.

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.

选C，可是为什么B不对呢？由于没有其他污染，所以有更多paking 这样尾气也少了建筑物自然受尾气伤害少了啊 ~~~~我看好多NN都说b无关，为什么呢

作者: mingzhu99 时间: 2010-11-25 18:42

文章结论是采取了一个什么措施导致了危害减少

B给了一个其它的原因，但没有围绕这个措施怎样怎样在谈，所以无关

记住GMAT文中没给的信息就当不知道，别自己联想~

作者: zhongyaya 时间: 2010-11-26 06:46

P 城市的建筑被来到P城市的旅游车的尾气破坏了。由于没有足够的停车位，所以这些旅游车就每一站都在路边idled（汽车不开，但是发动机开着，同样产生尾气）而车这种行为所产生的尾气和汽车在运行时产生的尾气一样多。所以这个城市就想出一个办法，建了更多的停车场，能装下三分之一的旅游车（这样一来汽车就可以把发动起关了停在停车场中，就不会产生尾气）所以P城市汽车产生的尾气就大大减少了。
C 是说旅游车很少在P城市transport游客（暗含的意思就是说汽车在运行时产生的尾气本身很少，这个城市本来的大量尾气是来自于汽车idle在路边，所以城市尾气的减少主要是因为汽车不再idle）support结论
B 的意思是P城市的建筑没有被其他pollution影响，而是（other than）被汽车的engine exhaust污染，（我个人认为engine exhaust 包括汽车空转时产生的废气和汽车运行时产生的废气）这样一来根据conclusion是汽车空转是产生的废气减少了，所以城市污染就减少了，得出这样一个结论应当控制汽车运行时产生的废气不变或者减少，而B选项没有这样。C选项则是针对了这一点。

关键在于：根据题意：城市的总污染=汽车运行时产生的尾气+汽车空转是时的尾气
现在：下降 ↓ 下降
则必须不变

非常罗嗦凑合看吧~

作者: Fuckitup 时间: 2010-11-27 19:11

嗯。。明白了

作者: georgina1107 时间: 2010-11-28 06:59

虽然lz已经明白了,但是我当时也做错了,所以也啰嗦一句哈
注意文章的最后一句话so damage to Palitito's buildings from the buses' exhaust will diminish significantly.
所以我们只要support只要idle产生的废气少了,由汽车废气造成的危害就少了 ,就可以了
除了汽车废气意外还有没有什么别的污染环境是无关的~

作者: xiexiang 时间: 2010-11-28 21:50

虽然lz已经明白了,但是我当时也做错了,所以也啰嗦一句哈
注意文章的最后一句话so damage to Palitito's bu ...
georgina1107 发表于 2010-11-28 06:59

你这句救了我，谢谢！

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