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
2024-08-19
43
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
C
解析
转载请注明原文地址:https://tihaiku.com/zcyy/3726291.html
相关试题推荐
Learningdisabilitiesareverycommon.Theyaffectperhaps10percentofall
Learningdisabilitiesareverycommon.Theyaffectperhaps10percentofall
Well,really______nowisstartlearningwhattodowiththissoftwareandread
Betterchildcareandeducation______affectedalowmorbidityandmortalityam
石油价格的飞速上涨对世界经济产生了很大影响。(affect)Therapidincreaseinthepriceofoilhasgreatly
Ofalltheareasoflearningthemostimportantisthedevelopmentofattitu
Ofalltheareasoflearningthemostimportantisthedevelopmentofattitu
Ofalltheareasoflearningthemostimportantisthedevelopmentofattitu
Ofalltheareasoflearningthemostimportantisthedevelopmentofattitu
Ofalltheareasoflearningthemostimportantisthedevelopmentofattitu
随机试题
Outsidemyofficewindowthereisafire______ontheright.A、escapeB、ladderC、s
Allthroughmyboyhoodandyouth,Iwasknownasanidler;andyetIwasalw
Someunionofficialshavesuggestedthatwomenshouldreturnhomebecause______
Itwaseleveno’clockthatnightwhenMr.PontellierreturnedfromKlein’shot
不属于对原有路面调查采用的方法是()A.钎探法 B.地质雷达 C.弯沉
精神抑郁,胸闷不畅时发出的长吁短声,称为A.瘖B.太息C.鼻鼾D.失音E.音哑
某人在银行存款,存款利率为6%,按复利计。若想在第4年年末取款8750元,从存款
在无节奏流水施工中,通常用来计算流水步距的方法是()。A.累加数列错位相减取差
全胃切除后的病人可能出现A.糖类食物消化吸收障碍 B.蛋白质食物消化吸收障碍
承包人在进行合同约定的各项工作时,不得侵害发包人与他人使用公用道路、水源、市政管
最新回复
(
0
)