T-9-Q40求助（GWD第13套40题）

夏淼小姐 · 发表于 2014-10-3 17:18:55

For most people, the left half of the brain controls linguistic capabilities, but some people have their language centers in the right half. When a language center of the brains is damaged, for example, by a stroke, linguistic capabilities are impaired in some way. Therefore, people who have suffered a serious stroke on the left side of the brain without suffering any such impairment must have their language centers in the right half.
Which of the following is an assumption on which the reasoning in the argument above depends?
A. No part of a person’s brain that is damaged by a stroke never recovers
B. Impairment of linguistic capabilities does not occur in people who have not suffered any damage to any language center of the brain.
C. Strokes tend to impair linguistic capabilities more severely than does any other cause of damage to language centers in the brain.
D. If there are language centers on the left side of the brain, any serious stroke affecting that side of the brain damages at least one of them.
E. It is impossible to determine which side of the brain contains a person’s language centers if the person has not suffered damage to either side of the brain.
为什么答案是D呢，不是很明白，我选的B

echo3104 · 发表于 2014-10-3 23:10:02

如果大脑language center受损的话，语言能力也会受损
conclusion: 如果有人的左脑中风了，但是语言能力没影响的话，这些人的language center就是在右脑的

左脑中风和language center受损之间有一个逻辑gap，你咋知道左脑中风了，左脑的language center就受损了呢？
D选项说的就是这个，对D取非：如果左脑中风的话，不会伤害到language center，削弱了结论
B选项说center不受损，语言能力就不会受损，这是对原文When a language center of the brains is damaged, for example, by a stroke, linguistic capabilities are impaired in some way.这句的重复吧

不知道表达清楚我的意思没。。。
http://forum.chasedream.com/thread-252193-1-1.html 这里也有讨论，LZ也可以参考

T-9-Q40求助（GWD第13套40题）

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