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2011-09-06 18:07:00   来源：网络资源    双击单词自动翻译

　　Antoine: The government should not raise the sales tax on gasoline. Such an increase would be unfair to gasoline users. If taxes are to be increased, the increases should be applied in such a way that they spread the burden of providing the government with increased revenues among many people, not just the users of gasoline.

　　As a rebuttal of Giselle’s argument, Antoine’s response is ineffective because

　　(A) he ignores the fact that Giselle does not base her argument for raising the gasoline sales tax on the government’s need for increase revenues

　　(B) he fails to specify how many taxpayers there are who are not gasoline users

　　(C) his conclusion is based on an assertion regarding unfairness, and unfairness is a very subjective concept

　　(D) he mistakenly assumes that Giselle wants a sales tax increase only on gasoline(A)

　　(E) he makes the implausible assumption that the burden of increasing government revenues can be more evenly distributed among the people through other means besides increasing the gasoline sales tax

　　5. A government agency publishes ratings of airlines, ranking highest the airlines that have the smallest proportion of late flights. The agency’s purpose is to establish an objective measure of the relative efficiency of different airlines’ personnel in meeting published flight schedules.

　　Which one of the following, if true, would tend to invalidate use of the ratings for the agency’s purpose?

　　(A) Travelers sometimes have no choice of airlines for a given trip at a given time.

　　(B) Flights are often made late by bad weather conditions that affect some airlines more that others.

　　(C) The flight schedules of all airlines allow extra time for flights that go into or out of very busy airports.

　　(D) Airline personnel are aware that the government agency is monitoring all airline flights for lateness.(B)

　　(E) Flights are defined as “late” only if they arrive more that fifteen minutes past their scheduled arrival time, and a record is made of how much later than fifteen minutes they are.