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.[j2] 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.
答案是B
问题：A为何错?B好像与原题没有什么关系？作者: judyenglish 时间: 2010-1-11 19:38
有没有高手可以帮我解答一下？！作者: judyenglish 时间: 2010-1-11 21:47 标题: 找到前辈高手解答 推理思路：税上升，导致烟的价钱上升，导致销量减少。要加强的是，加税后的烟价上升导致销量减少。 A. During the second year after the tax increase, cigarette sales increased by a significant amount. 加税后的烟价上升导致销量上升了。削弱（同因异果） B. The information available to consumers on the health risks of smoking remained largely unchanged in the period before and after the tax increase. 消费者们得到的信息没变，排除他因。加强。