Scientists found that the brain cells of a learning disabled person differ from those of a normal person in ______. All of the

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问题 Scientists found that the brain cells of a learning disabled person differ from those of a normal person in ______.
All of the following statements are true EXCEPT that ______.

选项 A、many factors account for learning disorder
B、a learning disabled person shows no outward signs
C、reading disabilities are a common problem that affects 10 % of the population
D、the brain activity of learning disabled children is different from that of normal children

答案C

解析 文中并没有提学习上的障碍是影响10%人口的普遍性问题。A项指出学习上的障碍有许多因素是正确的,文中第二段谈到脑细胞的颜色和排列,最后一段谈到大脑活动,这些都是产生学习障碍的因素;B项的内容见文中第一段最后两句话,学习障碍没有外在的迹象,因此一些研究者们开始检查大脑本身,看其是否有问题;D项的内容见文中最后一段第二句话,Duffy博士发现正常孩子和有阅读障碍的孩子在大脑活动上有很大不同。
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