标题: 请教大全-8-13 [打印本页] 作者: joywzy 时间: 2003-5-2 19:00 标题: 请教大全-8-13 The program to control the entry of illegal drugs into the country was a failure in 1987. If the program had been successful, the wholesale price of most illegal drugs would not have dropped substantially in 1987.
13. The argument in the passage depends on which of the following assumptions?
(A) The supply of illegal drugs dropped substantially in 1987. (B) The price paid for most illegal drugs by the average consumer did not drop substantially in 1987. (C) Domestic production of illegal drugs increased at a higher rate than did the entry of such drugs into the country. (D) The wholesale price of a few illegal drugs increased substantially in 1987. (E) A drop in demand for most illegal drugs in 1987 was not the sole cause of the drop in their wholesale price.
ans: E，我不明白E为什么是假设呢？如果取非，也不能否定这个结论啊？？？
谢谢。 作者: renprince 时间: 2003-5-2 19:11
排除他因 作者: joywzy 时间: 2003-5-2 19:45
怎么就排除了他因了？作者: cranberry 时间: 2003-5-2 20:49
供求决定价格，如果需求的减少不是导致降价的唯一原因，则一定是供给太多了，那就可以理解了作者: joywzy 时间: 2003-5-2 21:07
If the program had been successful, the wholesale price of most illegal drugs would not have dropped substantially in 1987 ==>The program to control the entry of illegal drugs into the country was a failure in 1987. 对吗？ 如果是这样的话，assumption 应该是对结论的，而不是对论据的，对吗？而答案却是对论据的，是不是有问题？
