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请教一道逻辑题

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楼主
发表于 2008-7-4 15:52:00 | 只看该作者

请教一道逻辑题

Despite the approach of winter, oil prices to industrial customers are exceptionally low this year and likely to remain so. Therefore, unless the winter is especially severe, the price of natural gas to industrial customers is also likely to remain low.

Which of the following, if true, provides the most support for the conclusion above?

A. Long-term weather forecasts predict a mild winter.

B. The industrial users who consume most natural gas can quickly and cheaply switch to using oil instead.

C. The largest sources of supply for both oil and natural gas are in subtropical regions unlikely to be affected by winter weather.

D. The fuel requirements of industrial users of natural gas are not seriously affected by the weather.

E. Oil distribution is more likely to be affected by severe winter weather than is the distribution of natural gas.

沙发
发表于 2008-7-4 16:22:00 | 只看该作者

B?

板凳
发表于 2008-7-4 16:53:00 | 只看该作者
B
地板
 楼主| 发表于 2008-7-4 19:58:00 | 只看该作者
请问如何分析的呀?谢谢……
5#
发表于 2008-7-4 21:27:00 | 只看该作者
这是经济学里的一个互补品,价格同涨同跌,但也有一个前提就是转化会非常快而且没成本,oil prices to industrial customers are exceptionally low,natural gas就是一个互补品,他的价格其实是必然会低的,关键就是那个前提要满足下,B就是把这个前提说出来了,所以就加强了。没什么别的,可能LZ不是学经济金融的出身
6#
 楼主| 发表于 2008-7-5 11:42:00 | 只看该作者

哦,明白啦,非常感谢……

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