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帮我解答下问题吧,谢谢谢谢

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楼主
发表于 2013-7-14 15:34:44 | 只看该作者 回帖奖励 |倒序浏览 |阅读模式
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.

The argument above requires which of following assumptions?


A.During the year following the tax increase, the pretax price of a pack of cigarettes did not increase by as much as it had during the year prior to the tax increase.
B.The one percent fall in cigarette sales in the year prior to tax increase was due to a smaller tax increase.
C.The pretax price of a pack of cigarettes gradually decreased throughout the year before and the year after the tax increase.
D.For the year following the tax increase, the pretax price of a pack of cigarettes was not eight or more cents lower than it had been the previous year.
E.As the after-tax price of a pack of cigarettes rises, the pretax price also rises.

D是正确的,但我选了A。
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The total market value of real estate in Altonville has steadily declined over the past four years.  This decline has meant that the overall figure on which the city's property tax is based ─ the assessed value of that real estate ─ has also declined.  Moreover, the percentage of assessed value that was paid as property taxes to the city did not change during this period.

The information above most strongly supports which of the following?
A.Money collected from property taxes provided most of Altonville's revenue during the past four years.
B.The percentage of Altonville's overall revenue that was collected from property taxes did not change over the past four years.
C.Altonville officials had proposed raising property tax rates during the past four years but never did so because of strong opposition from property owners.
D.The total amount of revenue that Altonville has collected from property taxes has declined over the past four years.
E.During the past four years, Altonville officials also did not increase tax rates on other sources of revenue such as retail sales or business profits.

D对,我选了B.文中说"the percentage of assessed value that was paid as property taxes to the city did not change during this period." so the revenue which is collected from property taxes not change. 为什么不对
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沙发
发表于 2013-7-15 12:44:14 | 只看该作者
第一题我的理解是这样的:此题论证的因果关系是:征税后价格上升(因)导致销量下降(果)。A选项是不是assumption,假设A选项是错误的,即现在的税前价格和以前相比,increase 了一样多,那么以前销量才下降了1%,现在理应也下降差不多的幅度,可是现在却下降了10%,显然更大的因素是征税,这符合原文的因果关系,所以A不是必要假设。假设D选项是错误的,即现在的税前价格和以前相比,低了8美分或者更多,那么即使征税8美分,则税后价格也会低于以前的价格,按道理价格下降销量应该会上升,这与原文销量下降10%矛盾,故假设不成立,即D是正确的。
第二题我猜测您是误解了最后一句话的意思。D选项是正确的,因为原文末句说的意思是估计价值中作为财产税上交政府的比例不变,即税率不变,(财产税的税率是根据财产的某个比例确定)。而原文又说估计价值(税基)下降,由税收收入=税基*税率可得,税收收入下降。B选项说财产税收入在政府总财政收入中的比例不变,跟原文无关。
若有不对,还请大牛们指教。O(∩_∩)O
板凳
 楼主| 发表于 2013-7-15 17:08:56 | 只看该作者
一首简单的越歌 发表于 2013-7-15 12:44
第一题我的理解是这样的:此题论证的因果关系是:征税后价格上升(因)导致销量下降(果)。A选项是不是ass ...

嗯嗯,谢谢你,解答我的疑惑了。。
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