标题: prep1-75 da niu zhi jiao [打印本页] 作者: wakesleep2011 时间: 2011-6-6 12:19 标题: prep1-75 da niu zhi jiao In the year following an eight-cent increase in the federal tax on a pack of cigarettes, sales of cigarettes fell ten percent. In contrast, in the year prior to the tax increase, sales had fallen one percent. The volume of cigarette sales is therefore strongly related to the after-tax price of a pack of cigarettes. Which of the following, if true, would most strengthen the argument above? A. During the second year after the tax increase, cigarette sales increased by a significant amount. B. The information available to consumers on the health risks of smoking remained largely unchanged in the period before and after the tax increase. C. Most consumers were unaware that the tax on cigarettes was going to increase. D. During the year following the cigarette tax increase, many consumers had less income, in inflation-adjusted dollars, than they had had in the previous year. E. During the year after the tax increase, there was a greater variety of cigarettes on the market than there had been during the previous year.
who can tell me that why C is wrong? Thanks作者: pygmysog 时间: 2011-6-6 13:59
c is irrelevant.
The conclusion is " The volume of cigarette sales is therefore strongly related to the after-tax price of a pack of cigarettes"
The key elements here is "tax" and "volumn", you should try to find out the relationship between them.
It doesn't matter whether the consumers were aware of the tax.作者: lianlianchen 时间: 2011-6-6 20:33
which one is right?作者: MarsTOF 时间: 2011-6-6 21:17
选C吧？排除一个他因。。作者: 鸢尾花的叶 时间: 2011-7-5 14:16
答案是B，我想问为什么不选C呢？我的理解是“人们意识不到税涨了，说明销售量不受税的影响，说明销售量受税后价的影响，加强。”