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.
答案：C，我觉得B，C，E都有削弱作用。
17. Being articulate has been equated with having a large vocabulary. Actually, however, people with large vocabularies have no incentive for, and tend not to engage in, the kind of creative linguistic self-expression that is required when no available words seem adequate. Thus a large vocabulary is a hindrance to using language in a truly articulate way.
Which one of the following is an assumption made in the argument?
(A) When people are truly articulate, they have the capacity to express themselves in situations in which their vocabularies seem inadequate.
(B) People who are able to express themselves creatively in new situations have little incentive to acquire large vocabularies.
(C) The most articulate people are people who have large vocabularies but also are able to express themselves creatively when the situation demands it.
(D) In educating people' to be more articulate, it would be futile to try to increase the size of their vocabularies.
(E) In unfamiliar situations, even pe0ple with large Vocabularies often do not have Specifically suitable words available.
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发表于 2003-5-17 17:33:00
