OG104

girlwithwings

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.D

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

D
问题如下2点
1

cannot be true unless which of the following is true?
=Can be true if Option is not true 即选项取非即满足结论
可否如此理解？
2
这种问法可否看成 weaken题型？
在lawyerNN笔记中被归纳为assumption,我还是百思不得其解。

2
这种问法可否看成 weaken题型？
在lawyerNN笔记中被归纳为assumption,我还是百思不得其解。

sunluning0

这题是属于assumption里的defender类别, 一般正确答案取非就会对原文构成削弱.
问题是说如果有一个条件出现可以使原文can be true(注意:不是must be true)

girlwithwings

你的意思是说--- 问题是说如果有一个条件出现可以使原文can NOT be true 是吗？
你写成了Can be true, 所以确认一下