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Q32:
Delta products, Inc., has recently switched at least partly from older technologies using fossil fuels to new technologies powered by electricity. The question has been raised whether it can be concluded that for a given level of output, Delta’s operation now causes less fossil fuel to be consumed than it did formerly. The answer, clearly, is yes, since the amount of fossil fuel used to generate the electricity needed to power the new technologies is less than the amount needed to power the older technologies, provided that the level of output is held constant.
In the argument given, the two boldface portions play which of the following roles?
The first identifies the content of the conclusion of the argument; the second provides support for that conclusion.
The first provides support for the conclusion of the argument; the second identifies the content of that conclusion.
The first states the position that the argument opposes; the second states the conclusion of the argument.
Each provides evidence that calls the conclusion of the argument into question.
Each provides support for the conclusion of the argument.
答案，选E，我觉得第一句话明明就是在说明一个事实，一个地方发生了一件什么事，怎么能够为作者的论点提供支持？而其他的4项又不对。
Q2:
Twenty years ago, Balzania put in place regulations requiring operators of surface mines to pay for the reclamation(开垦) of mined-out land. Since then, reclamation technology has not improved. Yet, the average reclamation cost for a surface coal mine being reclaimed today is only four dollars per ton of coal that the mine produced, less than half what it cost to reclaim surface mines in the years immediately after the regulations took effect.
Which of the following, if true, most helps to account for the drop in reclamation costs described?
Even after Balzania began requiring surface mine operators to pay reclamation costs, coal mines in Balzania continued to be less expensive to operate than coal mines in almost any other country.
In the twenty years since the regulations took effect, the use of coal as a fuel has declined from the level it was at in the previous twenty years.
Mine operators have generally ceased surface mining in the mountainous areas of Balzania because reclamation costs per ton of coal produced are particularly high for mines in such areas.
Even after Balzania began requiring surface mine operators to pay reclamation costs, surface mines continued to produce coal at a lower total cost than underground mines.
As compared to twenty years ago, a greater percentage of the coal mined in Balzania today comes from surface mines.
答案选C，麻烦指教一下推理过程。谢谢
GWD题目，但是手头没有原题，所以没找到对应题号，请斑竹海涵，谢谢。 | 
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发表于 2006-2-11 23:09:00
