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GWD6-Q14: Political Advertisement: Mayor Delmont’s critics complain about the jobs that were lost in the city under Delmont’s leadership. Yet the fact is that not only were more jobs created than were eliminated, but the average pay for these new jobs has been higher than the average pay for jobs citywide every year since Delmont took office. So there can be no question that throughout Delmont’s tenure the average paycheck in this city has been getting steadily bigger. Which of the following, if true, most strengthens the argument in the advertisement? A. The average pay for jobs created in the city during the past three years was higher than the average pay for jobs created in the city earlier in Mayor Delmont’s tenure. B. Average pay in the city was at a ten-year low when Mayor Delmont took office. C. Some of the jobs created in the city during Mayor Delmont’s tenure have in the meantime been eliminated again. D. The average pay for jobs eliminated in the city during Mayor Delmont’s tenure has been roughly equal every year to the average pay for jobs citywide. E. The average pay for jobs in the city is currently higher than it is for jobs in the suburbs surrounding the city. 答案是D，但是不明白减少工作的average pay与这个市的average pay一样怎么就能起到加强的作用。 我选了B。。。
GWD6-Q32: Proposal: Carbon dioxide and methane in the atmosphere block the escape of heat into space. So emission of these “greenhouse” gases contributes to global warming. In order to reduce global warming, emission of greenhouse gases needs to be reduced. Therefore, the methane now emitted from open landfills should instead be burned to produce electricity. Objection: The burning of methane generates carbon dioxide that is released into the atmosphere. Which of the following, if true, most adequately counters the objection made to the proposal?
A. Every time a human being or other mammal exhales, there is some carbon dioxide released into the air. B. The conversion of methane to electricity would occur at a considerable distance from the landfills. C. The methane that is used to generate electricity would generally be used as a substitute for a fuel that does not produce any greenhouse gases when burned. D. Methane in the atmosphere is more effective in blocking the escape of heat from the Earth than is carbon dioxide. E. The amount of methane emitted from the landfills could be reduced if the materials whose decomposition produces methane were not discarded, but recycled. 答案是D，但是我觉得C也对阿。。。
GWD6-Q40: It is theoretically possible that bacteria developed on Mars early in its history and that some were carried to Earth by a meteorite. However, strains of bacteria from different planets would probably have substantial differences in protein structure that would persist over time, and no two bacterial strains on Earth are different enough to have arisen on different planets. So, even if bacteria did arrive on Earth from Mars, they must have died out. The argument is most vulnerable to which of the following criticisms?
A. It fails to establish whether bacteria actually developed on Mars. B. It fails to establish how likely it is that Martian bacteria were transported to Earth. C. It fails to consider whether there were means other than meteorites by which Martian bacteria could have been carried to Earth. D. It fails to consider whether all bacteria now on Earth could have arisen from transported Martian bacteria. E. It fails to consider whether there could have been strains of bacteria that originated on Earth and later died out. 答案是D，说实话这道题没看懂。。。 请高人指点！ | 
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发表于 2009-7-24 10:40:00
