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
5
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
D
解析
转载请注明原文地址:https://tihaiku.com/zcyy/3726288.html
相关试题推荐
Learningdisabilitiesareverycommon.Theyaffectperhaps10percentofall
Learningdisabilitiesareverycommon.Theyaffectperhaps10percentofall
Learningdisabilitiesareverycommon.Theyaffectperhaps10percentofall
Learningdisabilitiesareverycommon.Theyaffectperhaps10percentofall
Carefulsurveyshaveindicatedthatasmanyas50percentofpatientsdonottak
Onehundredboyswentonaschoolouting.Eighty-onepercentoftheboyslosta
Betterchildcareandeducation______affectedalowmorbidityandmortalityam
Ofalltheareasoflearningthemostimportantisthedevelopmentofattitu
Ofalltheareasoflearningthemostimportantisthedevelopmentofattitu
Ofalltheareasoflearningthemostimportantisthedevelopmentofattitu
随机试题
A.流通中的现金 B.农村存款 C.企业单位活期存款 D.城乡居民储蓄存款
关于Tobey-Ayer试验,错误的是A.目的是了解乙状窦是否有栓塞存在 B.
痿证之脾胃亏虚,精微不运证症见A.病起发热,皮肤干燥,咳呛少痰 B.肢体困重,
能抑制DNA多聚酶的抗病毒药是A.碘苷 B.金刚烷胺 C.利巴韦林 D.阿
《变电评价管理规定》:各级运检部应组织制定抽查评价工作方案,内容应包括哪些?评价
A.7 B.10 C.14 D.5
调查问卷的设计应()。A:清楚 B:简明 C:顺口 D:醒目
A.决明子 B.蛇床子 C.鹤虱 D.薏苡仁 E.小茴香长圆柱形,气香特
一台三相汽轮发电机,电枢绕组星形接法,额定容量SN=15000kVA,额定电压U
大理石常用于室内工程的最主要原因是()。A.质地较密实 B.抗压强度较高
最新回复
(
0
)