Questions 103

The brains of identical twins are genetically identical. When only one of a pair of identical twins is a schizophrenic, certain areas of the affected twin’s brain are smaller than corresponding areas in the brain of the unaffected twin. No such differences are found when neither twin is schizophrenic. Therefore, this discovery provides definitive evidence that schizophrenia is caused by damage to the physical structure of the brain.

If the statements on which the conclusion above is based are all true, each of the following could be true EXCEPT:

(A) People who lack a genetic susceptibility for the disease will not develop schizophrenia

(B) Medications can control most of the symptoms of schizophrenics share many of the characteristics found in those of people without the disorder

(C) The brains of schizophrenics share many of the characteristics found in those of people without the disorder

(D) It will eventually be possible to determine whether or not someone will develop schizophrenia on the basis of genetic information alone

(E) Brain abnormalities associated with schizophrenia are the result of childhood viral infections that inhibit the development of brain cells

我对提干的理解是：

ＩＤＥＮＴＩＣＡＬＴＷＩＮＳ　的大脑在基因上是相同的，　如果ＴＷＩＮ中其中一个有精神分裂症，那么患者脑中局部就比哪个未患精神分裂症ＴＷＩＮ小．　如果任何一个ＴＷＩＮ都没得精神分裂症，这种大小的区别也就不存在．　结论：脑部结构受伤（暗示不是基因的问题）造成精神分裂症；

Ｄ　和结论的暗示相反，说是可以有基因来判断是否得精神分裂症，WRONG, 所以是正确答案．

我的问题是怎么排除Ａ，和Ｂ?　我看不出这两个are "TRUE" based on the known information.

could be true EXCEPT题型的正确答案是和原文矛盾。凡是和原文不矛盾的都是错误答案，错误答案有两种：一是根据原文是对的，而是根据原文不知对错的，特别出现新元素时。AB属于第二种。