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

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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 ______.
Dr. Dully believed that ______.

选项 A、he found the exact cause of learning disabilities
B、the problem of learning disabilities was not limited to the left side of the brain
C、problem of learning disabilities resulted from the left side of the brain
D、the problem of learning disabilities didn’ t lie in the left side of the brain

答案B

解析 见文中最后一段最后一句话,Duffy博士说,他的研究证明阅读障碍来自大脑大面积的受到损害,而不是仅仅限于左脑。因此应选B项。A项中用了“exact”,意为“确切的”,该词用法不准确,Dr.Duffy并不认为他发现了学习障碍确切的原因。
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