另外你的意思可能是,其他的国家仍然使用,那么pollution仍然不会下降;我认为这个是一个regardless的问题。不管美国有没有继续使用,其他的国家如果increase the use,都会造成污染上升,只是其中美国部分下降了。如果没有也继续使用,那么污染会上升的更多。
这个问题的破题点在于:总量=A+B, A下降了,只要B 不是因为A的下降而上升(就是说,B可以是本来就要上升),那么A的下降就是对总量的下降有意义的。 C说A下降的部分,导致B的上升了,那么A对总量的就被抵消了。所以说最能削弱 A有作用
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. 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. Answer: C
觉得A也有道理的理由
题目要求 Weaken "the pollution will be reduced " ,
我的想法是
举个例子说不会reduced, 因为如果国外用这些older cars, 那么排放气体依然对全球有害。
也就是,不能把地区分割,只要不在北美就对Global无害的说法是不对的。 请大家帮助分析-- by 会员 girlwithwings (2009/12/29 12:48:58)
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