求助一道GWD逻辑题

法兰克福来客 · 发表于 2010-7-26 22:27:18

GWD 第五套14题
Certain politicians in the country of Birangi argue that a 50 percent tax on new automobiles would halt the rapid increase of automobiles on Birangi’s roads and thereby slow the deterioration of Birangi’s air quality.Although most experts agree that such a tax would result in fewer Birangians buying new vehicles and gradually reduce the number of automobiles on Birangi’s roads, they contend that it would have little impact on Birangi’s air-quality problem.

Which of the following, if true in Birangi, would most strongly support the experts’ contention about the effect of the proposed automobile tax on Birangi’s air-quality problem?

A.Automobile emissions are the largest single source of air pollution.

B.Some of the proceeds from the new tax would go toward expanding the nonpolluting commuter rail system.

C.Currently, the sales tax on new automobiles is considerably lower than 50 percent.

D.Automobiles become less fuel efficient and therefore contribute more to air pollution as they age.

E.The scrapping of automobiles causes insignificant amounts of air pollution.

我选的是E,我想如果汽车的尾气不是造成空气污染的主要原因，那么即使减少购买汽车，也不会对空气改善有明显效果。答案是D，但是我觉得就算人们因为税高了而不买车造成老车增加，污染没有减轻，那也是暂时的，因为只要是车，就会有使用年限，只要大家都不买车，这种车只会越来越少，20，30年后路上也就没这种排放污染的车了，长远的来讲，还是可以减轻污染的。不知道哪位nn帮忙解释一下。谢谢了！

liufeng881025 · 发表于 2010-7-26 23:13:11

本人拙见：
D说 aged cars less fuel efficiency 意思是说虽然人们不买新车了但是车子的老化同样会带来环境的污染
E说scrap，文中没说过要把车子拆了啊

法兰克福来客 · 发表于 2010-7-27 17:24:31

感谢楼上解答，当时做的时候不理解scrap这个词

spz316 · 发表于 2010-7-27 18:25:38

再补充一下，这题说新车减少后，污染就减少了。
错误假设：污染只有新车的减少决定，其他方面不会对其影响
要点就是去找“减少新车之后，其他方便带来的污染增加”
E选项即使说老车都要scrap，那么也是够的支持而不是削弱。
scrapping of automobiles ———— insignificant pollution（污染很少）
而我们要找的是使得污染增加的，个人觉得把E取非，构成很好的干扰选项

求助一道GWD逻辑题

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