GWD-TN-5 Q14,17 求解

liulianf

GWD7-Q14:

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.

答案选D，我选E.  逻辑如下
因为汽车排放废气占污染比重小，所以即使车排放得少了也没什么用。  为何选D呢？  难道是车少了之后，等到车老了，排放得废气就更多？


第二题：
Q17:

Of patients over 65 years old who survived coronary bypass surgery—a procedure widely prescribed for people with heart disease—only 75 percent benefited from the surgery.Thus it appears that for one in four such patients, the doctors who advised them to undergo this surgery, with its attendant risks and expense, were more interested in an opportunity to practice their skills and in their fee than in helping the patient.

Which of the following, if true, most seriously undermines the argument?



A.Many of the patients who receive coronary bypass surgery are less than 55 years old.

B.Possible benefits of coronary bypass surgery include both relief from troubling symptoms and prolongation of life.

C.Most of the patients in the survey decided to undergo coronary bypass surgery because they were advised that the surgery would reduce their risk of future heart attacks.

D.The patients over 65 years old who did not benefit from the coronary bypass surgery were as fully informed as those who did benefit from the surgery as to the risks of the surgery prior to undergoing it.

E.The patients who underwent coronary bypass surgery but who did not benefit from it were medically indistinguishable, prior to their surgery, from the patients who did benefit.

答案选E,我选D.  看不懂E在说什么.....


向大家求解

liulianf

感谢各位G友啦~  求解啊~~~~

切尔西

第一题，科学家的结论是虽然买新车的人少了并且汽车的数量逐渐减少了，但是增加税收对环境污染不会有多大影响，问加强？

D，汽车用的年限多了，会变得更废油并且污染更厉害了
可以看出，提出了其他原因说明不会因为车少了导致污染减慢， 正确

E， 汽车的报废不会产生很严重的污染，与题干无关

liulianf

谢ls的tx啦！   一句点醒！

GMAT保佑我

还是不懂，，，车的数量变少，。使用年限并不会跟原来不同啊，所以车老化产生的废气相同，车的数量变少，不应该导致整体变少吗？ 感觉是weaken阿。。

求解~~！

Uhanhan

因为别人不去买新车，然后就一直用本来的车。原本的车用久了，会出现汽油燃烧不完全等现象。所以污染空气环境。