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标题: [求助]OG-104 [打印本页]

作者: 华籍美人 时间: 2005-3-8 09:14
标题: [求助]OG-104

104.

Spending on research and development by United States businesses for 1984 showed an increase of about 8 percent over the 1983 level. This increase actually continued a downward trend evident since 1981 – when outlays for research and development increased 16.4 percent over 1980 spending. Clearly, the 25 percent tax credit enacted by Congress in 1981, which was intended to promote spending on research and development, did little or nothing to stimulate such spending.

The conclusion of the argument above cannot be true unless which of the following is true?

(A) Business spending on research and development is usually directly proportional to business profits.

(B) Business spending for research and development in 1985 could not increase by more than 8.3%.

(C) Had the 1981 tax credit been set higher than 25%, business spending for research and development after 1981 would have increased more than it did.

(D) In the absence of the 25% tax credit, business spending for research and development after 1981 would not have been substantially lower than it was.

(E) Tax credits market for specific investments are rarely effective in inducing businesses to make those investments.

104.

The conclusion that the tax credit did nothing to stimulate spending on research and development would not be true if, without the credit, such spending would have been even lower than it actually was. Thus choice D must be true for the conclusion to be true and is the best answer.

D选项的虚拟语气是什么意思啊？是说要是没有这个credit，1981年后的business spending本不会比实际低么

我怎么觉得这么坳口啊，请解释一下思路可以么，谢！

作者: 华籍美人 时间: 2005-3-9 16:08

有人能帮忙解释一下么？还是这道题已经分析过了？

我先顶一下！

作者: colacat 时间: 2005-3-9 17:33

这道题目实际上是not +weaken的题目

你把D中的not 先不读(既D 取非），选项对结论是削弱的效果

那么再把not还原，其效果就是加强了

feifei 网络课堂对这类题目有专门的论述

作者: elite-william 时间: 2005-3-9 17:50

d说,要是没有25% tax credit, business spending for research and development after 1981 会比实际跌的更厉害

这是取非削弱的题型 as colacat said

顺便问一下各问大侠,网络教程的课件,例题等哪儿有下啊

作者: colacat 时间: 2005-3-9 19:46
下载区

作者: 华籍美人 时间: 2005-3-10 08:50
多谢牛牛指教！

作者: uajasmine 时间: 2005-3-17 12:11

下载区有专门针对那个逻辑笔记的列体的吗？

好像没有哪个咚咚？

huajimeiren could you please email me one copy if you find it? TKS!

lijuanye(A) hotmail.com

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