新prep75

zxkingsey

75.(33198-!-item-!-188;#058&007254)







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.答案A
我是想请教一下E。E说现在的烟的 品种比以前多，那么我觉得可以看成是排除他因，不是因为品种下降而sales下降，排除了品种下降的可能。
我是错在哪里了？

答案B
我是想请教一下E。E说现在的烟的 品种比以前多，那么我觉得可以看成是排除他因，不是因为品种下降而sales下降，排除了品种下降的可能。
我是错在哪里了？

zxkingsey

up

liufeng881025

E 说牌子多了，但是与SALE无关啊。牌子多了既不能说明SALE会上涨，也不能说明SALE会下降，我觉得属于无关选项吧

zxkingsey

还是没有想明白

spz316

答案是75. B,刚对的答案，我怎么看怎么A不对的

spz316

希望LZ明确，这个题目在讨论的是：“联邦税和烟的销售是否相关”


关于E选项，LZ主管臆想了，题目没有告诉你种类的多少如何影响销售的
你自己说的，种类增多，排除了因种类减少的影响
错误的假设了：种类减少的话能够影响销售
题目中可没有涉及关于这个假设的证明啊。variety of cigarettes 是无关因素，如果你非要想的话，我也没办法。你真要理解成相关的话，我觉得E更是削弱，种类增多了，可能导致销售增加了，这样就排除了销售税的影响，构成他因削弱

zxkingsey

[quote]
希望LZ明确，这个题目在讨论的是：“联邦税和烟的销售是否相关”


关于E选项，LZ主管臆想了，题目没有告诉你种类的多少如何影响销售的
你自己说的，种类增多，排除了因种类减少的影响
错误的假设了：种类减少的话能够影响销售
题目中可没有涉及关于这个假设的证明啊。variety of cigarettes 是无关因素，如果你非要想的话，我也没办法。你真要理解成相关的话，我觉得E更是削弱，种类增多了，可能导致销售增加了，这样就排除了销售税的影响，构成他因削弱

-- by 会员 spz316 (2010/7/28 8:43:23)

[/quote不好意思我把答案写错了

那么，我自己假设种类和销量有关系，那消费者可以获得的有关吸烟危害的信息也是有假设这个信息对销售有影响啊！我比较拧，不明白，想要搞懂