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题库 / GMATLA-CR-16
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
P：大多数人的语言中枢在左半脑，但是一些人的语言中枢在右半脑。当一个人的语言中枢被中风伤害，语言能力会因此被损伤。
C：因此当一些人的左半脑中风但是没有任何语言能力伤害，一定是因为语言中枢在右半脑
assumption就是如果语言中枢在左脑，任何发生在左半脑的中风至少会造成语言中枢的伤害
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