GWD第三套，一题逻辑

茶色的秋天

28. 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 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.
  Answer:

weijiejing

D?

茶色的秋天

D?

-- by 会员 weijiejing (2011/8/7 14:23:28)

对啊，答案就是D，可是我不明白，我选了E，为什么是D啊？我觉得如果这类车子本来就不是污染的主要源头，这样不就可以说明即使减少也不会对环境有很大改善么？D又是何解呢？想不通啊

wycg

D?

-- by 会员 weijiejing (2011/8/7 14:23:28)

对啊，答案就是D，可是我不明白，我选了E，为什么是D啊？我觉得如果这类车子本来就不是污染的主要源头，这样不就可以说明即使减少也不会对环境有很大改善么？D又是何解呢？想不通啊

-- by 会员 茶色的秋天 (2011/8/7 14:27:53)

题目问的是mostly support. D/E 2个选项比较, D好些.
E只是说了尾汽对空气污染不是很显著. 但这并没有提及题干里面方案对新车数量的减少,对空气质量的影响. 可以是:新车数量的减少而使得尾汽对空气污染锐减.这就和砖家们说的相反了. 这题要特别注意: 新车数量的变化和相应的effect. E并没有给出解答.

D说了明确指出了新车和老车对空气污染的影响.从而直接说明了新车数量的减少并不能给空气质量带来大的提升.

这题挺难的.

祝考试顺利~

茶色的秋天

[quote]

D?

-- by 会员 weijiejing (2011/8/7 14:23:28)

针对你的解释，我的理解是，这个车子比较耗油，并且老车会对环境危害更大，所以新车锐减，并不能有效减少空气污染，问题在老车上。所以D加强了专家的论断是么？

茶色的秋天

谢谢啦