首页
外语
计算机
考研
公务员
职业资格
财经
工程
司法
医学
专升本
自考
实用职业技能
登录
外语
Learning disabilities are very common. They affect perhaps 10 percent of all children. Four times as many boys as girls have lea
Learning disabilities are very common. They affect perhaps 10 percent of all children. Four times as many boys as girls have lea
admin
2015-12-31
69
问题
Learning disabilities are very common. They affect perhaps 10 percent of all children. Four times as many boys as girls have learning disabilities.
Since about 1970, new research has helped brain scientists understand these problems better. Scientists now know there are many different kinds of learning disabilities and that they are caused by many different things. There is no longer any question that all learning disabilities result from differences in the way the brain is organized.
You cannot look at a child and tell if he or she has a learning disability. There is no outward sign of the disorder. So some researchers began looking at the brain itself to learn what might be wrong.
In one study, researchers examined the brain of a learning-disabled person, who had died in an accident. They found two unusual things. One involved cells in the left side of the brain, which control language. These cells normally are white. In the learning-disabled person, however, these cells were gray. The researchers also found that many of the nerve cells were not in a line the way they should have been. The nerve cells were mixed together.
The study was carried out under the guidance of Norman Geschwind, an early expert on learning disabilities. Doctor Geschwind proposed that learning disabilities resulted mainly from problems in the left side of the brain. He believed this side of the brain failed to develop normally. Probably, he said, nerve cells there did not connect as they should. So the brain was like an electrical device in which the wires were crossed.
Other researchers did not examine brain tissue. Instead, they measured the brain’s electrical activity and made a map of the electrical signals.
Frank Duffy experimented with this technique at Children’s Hospital Medical Center in Boston. Doctor Duffy found large differences in the brain activity of normal children and those with reading problems. The differences appeared throughout the brain. Doctor Duffy said his research is evidence that reading disabilities involve damage to a wide area of the brain, not just the left side.
Scientists found that the brain cells of a learning-disabled person differ from those of a normal person in______.
选项
A、structure and function
B、color and function
C、size and arrangement
D、color and arrangement
答案
D
解析
本题是一道具体细节题。问科学家发现有学习缺陷的人的脑细胞与正常人的在哪些方面不同。文章第四段指出,在一种试验中,研究者检验在事故中丧生的学习上有缺陷的人的大脑,他们有两个异常发现:(1)大脑的左半球控制着语言能力,左半球的脑细胞应该是白色的,但是,有学习缺陷的人的左半球的脑细胞却是灰色的;(2)在有学习缺陷的人的大脑中,许多脑细胞不是像正常细胞一样呈线状排列的,而是团在一起的。因此,本题的正确答案应是D“颜色与排列方式不同”。
转载请注明原文地址:https://kaotiyun.com/show/D1PO777K
0
在职攻硕英语联考
相关试题推荐
Thereareseveralstepsthatcanbetaken,ofwhichthechiefoneistodemandofalltheorganizationsthatexistwiththedecl
Man:Doyouwanttoturnontheair-conditioneroropenthewindows?Woman:Ilovefreshairifyoudon’tmind.Question:Whatc
WithoutwaterfromtheNileRiver,Egypt______afarmingcountryandbecomeadesert.
Emotionisafeelingaboutorreactiontocertainimportanteventsorthoughts.Peopleenjoyfeelingsuchpleasantemotionsasl
Afteryuppiesanddinkies,anewcreaturefromalandstalkstheblock.TheNYLON,anacronymlinkingNewYorkandLondon,isa
Inflationisaneconomicconditioninwhichpricesforconsumergoodsincrease,andthevalueofmoneyor【51】powerdecreases.Th
Thelanguageexpertsbelievethattheageforlearningaforeignlanguageis6yearsold.
Nuclearpower’sdangertohealth,safety,andevenlifeitselfcanbesummedupinoneword:radiation.Nuclearradiationha
Aristotle,theGreekphilosopher,summedupthefourbriefqualitiesofmoneysome2000yearsago.Itmustbelastingandeasy
Thesecausesproducedthegreatchangeinthecountrythatmodernizedthe______ofhighereducationfromthemid-1860’stothem
随机试题
冲积平原河流作用形成的河谷分布有哪些?
下列语义关系,发生在不同句子之间的有
人员推销的__________是否适当,直接影响着企业的经济效益。
男,56岁,声音嘶哑3个月,检查发现右声带有肉芽样物突出。既往有肺结核病史。首先应该进行
在原发性高血压病发病中占主导地位的因素是
位于头部,眉上1寸,瞳孔直上的腧穴是
某实业公司建筑分公司,在某家属楼施工过程中,该公司施工队队长张某、提升机操作员张某、瓦工张某准备上门层去,他们不从楼梯上,而是违章乘提升料盘。这时,提升机操作员王某正准备由四层往门层上运木料,驾驶员张某走过去,提升架由四层落下,让王某送他们上六层。王某不同
燃气工程中,人工燃气按制取方法不同可分为()。
现有一项关于学生的学习动机水平与学习成绩关系的研究,在分析两者关系时,有人建议用相关分析,有人建议用回归分析。请根据条件回答下列问题:(2014年)简述相关分析与回归分析的区别与联系。
Designatingthisbook(HandbookofPersonalityPsychology)a"handbook"isatonceaccurateandpossiblyunfortunate.Handbooks
最新回复
(
0
)