求助一题CR。lawyer的OG69。

sob2009 · 发表于 2011-5-4 08:40:31

69. When people evade income taxes by not declaring taxable income, a vicious cycle results. Tax evasion forces lawmakers to raise income tax rates, which causes the tax burden on non-evading taxpayers to become heavier. This, in turn, encourages even more taxpayers to evade income taxes by hiding taxable income.
The vicious cycle described above could not result unless which of the following were true?
(A) An increase in tax rates tends to function as an incentive for taxpayers to try to increase their pretax incomes.
(B) Some methods for detecting tax evaders, and thus recovering some tax revenue lost through evasion, bring in more than they cost, but their success rate varies from year to year.
(C) When lawmakers establish income tax rates in order to generate a certain level of revenue, they do not allow adequately for revenue that will be lost through evasion.
(0) No one who routinely hides some taxable income can be induced by a lowering of tax
rates to stop hiding such income unless fines for evaders are raised at the same time.
(E) Taxpayers do not differ from each other with respect to the rate of taxation that will cause them to evade taxes.

sob2009 · 发表于 2011-5-4 08:41:09

为什么是C奥。。。。。。。。。

Kb24 · 发表于 2011-5-4 10:13:31

其实算是道assumption的题吧
很多人逃税--LAWMAKER被迫提高税率--纳税人的负担更重了--更多人逃税 -- 形成一个恶性循环。
问哪个条件成立的话，上述推论成立
第一步推论：很多人逃税--为啥就会导致LAWMAKER被迫提高税率？是个LOGIC GAP
C 解释了这个原因，弥补了这个GAP，所以C

sdcar2010 · 发表于 2011-5-4 10:23:38

Necessary assumption. Use negation.

If you negate C, you have:
When lawmakers establish income tax rates in order to generate a certain level of revenue, they allow adequately for revenue that will be lost through evasion.

If this is true, the argument falls apart because the lost tax would not force the lawmaker to raise the tax and the vircious circle would not be complete.

sob2009 · 发表于 2011-5-4 10:23:48

恩！！对诶！！
谢谢奥。。

我想问哦，怎么看出来是assumption题啊？
我不是很会判断题型额

求助一题CR。lawyer的OG69。

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