PREP1-47

chenche8827

选D的时候心里想的是，工厂的排放是首要的污染源，那么刺激旧车换新车也就刺激了制造，结果就使得工厂排放出了更多的污染了，所以不能达到减少排放的目的了，和E其实基本上是一样的效果，而且这里说的是最主要的污染就是排放，刺激生产产生的污染应该是比减少汽车的排放量还要大啊

小伊YSY

LZ看看这样理解可以不？


Which of the following, if true, most seriously undermines the likelihood that the planned incentives, if implemented, will achieve both of the cited aims?

这句问题应该不是说选项一定要同时削弱两个aims，而是削弱同时达到两个aims的可能性，即是说，把both aims看成一个整体，削弱对象是可能性。那么，只要削弱哪怕是其一，也是削弱了总体可能性。


毕竟这句话的宾语是likelihood。

dreamistrue

LZ，题目most seriously undermines the likelihood that the planned incentives, if implemented, will achieve both of the cited aims?   的意思是，  哪个为真，会削弱一个可能性，什么可能性？同时达到俩全的可能性。 就是说只要削弱了其中1个，就是削弱了这种两全其美的可能性了！

dreamistrue

D不选是因为又扯到了power plant ，这是题目中没有出现的。(D) The largest source of atmospheric pollutants in Torinia is not automobile emissions, but emissions from power plants.       T最大的污染源不是来自汽车尾气，而是来自power plant,    这个D和题目中的要否定boost economy和reduce air pollution一点关系也木有啊！

jessi4765

那E选项是如何削弱的呢，顶多削弱降低污染，可是增加经济呢？

雪奈Yukina

(E) The manufacture and the scrapping of cars each generate significant amounts of air pollutants.

If this happens, the aim of lessening the air pollution wont be satisfied as significant amount of air pollution is caused in both old cars as well as manufacturing of new cars and scrapping of old cars. The argument states as premise that
"cars over five years old typically generate significantly greater amounts of pollutants than newer cars". But if the procedure in this transition leads to same amount of pollution, why will people even think of changing their cars even if there are incentives. They are not going to receive the cars for free. These are just incentives. Since government expects that people can help in reducing pollution, they provide incentives. And if new cars are not purchased then there is no point boost in economy.

Answer is E.

Both the aims should be achieved, but here one aim depends on other and hence the primary aim is reducing air pollution as supplemented by the premise. This is the most suitable option.