请教GWD3-Q28

orehin

GWD3-Q28:
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.

答案选d
ABC我知道都是错的，但是觉得E对

提税——停止车数量增长——减少空气污染
结论：对空气质量没影响

D是说现有的车污染会变多，但是如果通过提税减少的车的排放量大大大于现有车增加的污染的话，也是不能支持原文的呀
E说车的废气污染在空气污染中微不足道，我觉得刚好跟文中have little impact相对

xellyma

个人觉得。

结论应该是 买新车与否，对空气质量没影响。（experts承认tax的效应使得买新车的少，但是不认为会对空气质量有影响）

D的意思是  旧车的污染更厉害<--所以路上新车减少与否，对air 影响不大，因为关键是旧车的污染

E的意思是 当汽车破掉了，要处理掉汽车的时候，造成的污染不大。

orehin

OK了

kun5850

顶