GWD逻辑求解

cinderellahjy · 发表于 2014-3-2 17:49:40

T-9-Q40.
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?

No part of a person’s brain that is damaged by a stroke never recovers
Impairment of linguistic capabilities does not occur in people who have not suffered any damage to any language center of the brain.
Strokes tend to impair linguistic capabilities more severely than does any other cause of damage to language centers in the brain.
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.
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.
刚搜了一下竟然没有一个人问发这道题！！有没有哪位大神能全面解释一下？

南蛮也爱球 · 发表于 2014-3-2 22:39:33

答案是5？

wyw1018 · 发表于 2014-3-3 15:07:02

我的理解答案是4。
注意这句话：people who have suffered a serious stroke on the left side of the brain without suffering any such impairment里面的without suffering any such impairment，而答案4里面说如果左侧大脑有语言中心的话，any serious stroke affecting that side of the brain damages at least one of them.任何serious stroke会至少损害其中之一的语言中心。说明左侧大脑肯定没有语言中心，才能得出must have their language centers in the right half的结论。

cinderellahjy · 发表于 2014-3-3 15:23:25

wyw1018 发表于 2014-3-3 15:07
我的理解答案是4。
注意这句话：people who have suffered a serious stroke on the left side of the brai ...

谢谢！没有看到一个半脑会有几个language centers

[逻辑小分队] GWD逻辑求解

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