[face=Verdana]先劳驾在题目上表明来源和题号，谢谢。
72. A gas tax of one cent per gallon would raise one billion dollars per year at current consumption rates. Since a tax of fifty cents per gallon would therefore raise fifty billion dollars per year, it seems a perfect way to deal with the federal budget deficit. This tax would have the additional advantage that the resulting drop in the demand for gasoline would be ecologically sound and would keep our county from being too dependent on foreign oil producers.
Which one of the following most clearly identifies an error in the author’s reasoning?
(A) The author cites irrelevant data.
(B) The author relies on incorrect current consumption figures.
(C) The author makes incompatible assumptions.
(D) The author mistakes an effect for a cause.
(E) The author appeals to conscience rather than reason.
答案是C ,为什么这些ASSUMPTIONS 是INCOMPATIBLE?
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The two assumptions are:
1. Raised tax can serve to deal with deficit;
2. Raised tax can deter the consumtion of gas, which results in revenue reduction;
If the consumption of gas reduces, how can the revenue from tax serve to deal with the deficit at the same time? Now you see the imcompatibility.[/face]
[此贴子已经被作者于2003-11-2 12:45:21编辑过] | 
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发表于 2003-11-1 20:47:00
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