首页
登录
职称英语
Learning disabilities are very common. They affect perhaps 10 percent of all
Learning disabilities are very common. They affect perhaps 10 percent of all
游客
2023-10-19
20
管理
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.【72】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 has a learning disability. There is no outward sign of the disorder.【73】.
In one study, researchers examined the brain of a learning-disabled person who had died in an accident. They found two unusual things.【74】, 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,【75】. 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.【76】.
Other researchers did not examine brain tissue. Instead,【77】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.【78】. Doctor Duffy said his research gives evidence that reading disabilities involve damage to a wide area of the brain, not just the left side.
Sentences:
A. an early expert on learning disabilities
B. Scientists now know there are many different kinds of learning disabilities
C. So the brain was like an electrical device in which the wires were crossed.
D. So some researchers began looking at the brain itself to learn what might be wrong.
E. Scientists found that the brain cells of a learning-disability person differ from those of a normal person in size and arrangement.
F. The differences appeared throughout the brain.
G. they measured the brain’s electrical activity
H. One involved cells in the left side of the brain [br]
选项
答案
G
解析
转载请注明原文地址:https://tihaiku.com/zcyy/3111722.html
相关试题推荐
(1)Ricci,45,isnowstrikingoutonperhapshisboldestventureyet.Hepla
(1)Ricci,45,isnowstrikingoutonperhapshisboldestventureyet.Hepla
(1)Ricci,45,isnowstrikingoutonperhapshisboldestventureyet.Hepla
Moresurprising,perhaps,thanthecurrentdifficultiesoftraditionalmarri
Intheearly1800’s,over80percentoftheUnitedStateslaborforcewasen
Intheearly1800’s,over80percentoftheUnitedStateslaborforcewasen
Intheearly1800’s,over80percentoftheUnitedStateslaborforcewasen
Intheearly1800’s,over80percentoftheUnitedStateslaborforcewasen
Intheearly1800’s,over80percentoftheUnitedStateslaborforcewasen
[originaltext]W:Hello,Peter.HowaboutyourJapaneselearning?M:Oh,Susan,
随机试题
WhatdoestheAustraliangovernmentplantodo?[br][originaltext](24[C])A
Largecompaniesneedawaytoreachthesavingsofthepublicatlarge.The
ManypeoplewonderwhysomemenwanttoliveonthemoonItis【C1】______not
关于对比剂,以下叙述错误的是A.对比剂都不能人血 B.阴性对比剂原子序数低,密
读下图.回答下题。 图中城市中心与郊区相比()。A.气温高、降水少
关于企业内部研究开发项目的支出,下列说法中错误的是()。A、企业内部
欧洲文艺复兴运动中,经常反映在对教师职业道德的要求中的资产阶级思想是A.自然权
金黄色葡萄球菌引起的急性、慢性骨髓炎首选口服药A.红霉素B.克林霉素(氯林可霉素
商业银行由于资金周转的需要,以未到期的合格票据再向中央银行贴现时所适用的利率是
装药期间,由炮孔引出的起爆导线应()。A.短路 B.接地 C.悬空 D.连
最新回复
(
0
)