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hedgeforfun · 发表于 2003-10-26 13:04:00

112. Older United States automobiles have been identified as contributing disproportionately to global air pollution. The requirement in many jurisdictions that automobiles pass emission-control inspections has had the effect of taking many such automobiles out of service in the United States, as they fail inspection and their owners opt to buy newer automobiles. Thus the burden of pollution such older United States automobiles contribute to the global atmosphere will be gradually reduced over the next decade.
Which one of the following, if true, most seriously weakens the argument?
(A) It is impossible to separate the air of one country or jurisdiction from that of others. Since air currents circle the globe.
(B) When automobiles that are now new become older, they will, because of a design change, cause less air pollution than older automobiles do now.
(C) The number of jurisdictions in the United States requiring automobiles to pass emission-control inspections is no longer increasing.
(D) 原书上缺漏
(E) Even if all the older automobiles in the United States were retired from service, air pollution from United States automobiles could still increase if the total number of automobiles in use should increase significantly.
选c,但我觉得e好,请高手指点

cranberry · 发表于 2003-10-26 19:38:00

e is not a sound amswer ,for the argument is "the pollution contribyted by older cars" will decrease and say nothing about the pollution of cars as a whole so e is not good choice.

seanql · 发表于 2003-12-5 00:11:00

这道题的原题在下面，C选项是正确的，否定了美国的旧车不会对全球空气产生影响。费费题中把C,D选项颠倒了。

8.Older United States automobiles have been identified as contributing disproportionately to global air pollution. The requirement in many jurisdictions that automobiles pass emission-control inspections has had the effect of taking many such automobiles out of service in the United States, as they fail inspection and their owners opt to buy newer automobiles. Thus the burden of pollution such older United States automobiles contribute to the global atmosphere will be gradually reduced over the next decade.
Which one of the following, if true, most seriously weakens the argument?
(A) It is impossible to separate the air of one country or jurisdiction from that of others.
(B) When automobiles that are now new become older, they will, because of a design change, cause less air pollution than older automobiles do now.
(C) There is a thriving market for used older Untied States automobiles that are exported to regions that have no emission-control regulations.
(D) The number of jurisdictions in the United States requiring automobiles to pass emission-control inspections is no longer increasing.
(E) Even if all the older automobiles in the United States were retired from service, air pollution from United States automobiles could still increase if the total number of automobiles in use should increase significantly.

nos36 · 发表于 2003-12-5 00:44:00

e : air pollution from United States automobiles could still increase if the total number of automobiles in use should increase significantly.

BUT : The requirement in many jurisdictions that automobiles pass emission-control inspections has had the effect of taking many such OLD automobiles out of service in the United States

NEW pass car might just emission 0.0000000000000000001 that of old car, so even significant increase in qty is not a big deal.

费费112

费费112

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