首页
登录
职称英语
[originaltext] Good morning, students. I hope you have been able to read the
[originaltext] Good morning, students. I hope you have been able to read the
游客
2023-07-29
46
管理
问题
Good morning, students. I hope you have been able to read the two books about speech and hearing problems that I put on the list. Today’s lecture deals with the presence of the unusually large deaf population that existed on the Massachusetts island Martha’s Vine-yard for about three centuries. From the settlement of the island in the 1640s to the 20th century, the people there, who were descended from only 25 or 30 original families, married mainly other residents of the island. They formed a highly inbred group, producing an excellent example of the genetic patterns for the inheritance of deafness. Indeed in the late 1800 one out of every 25 people in one village on the island was born deaf and the island as a whole had a deafness rate at least 17 times greater than that of the rest of the United States. Even Alexander Graham Bell, the inventor of the tele- phone and a prominent researcher into hearing loss, visited Martha’s Vineyard to study the population. But because of the principles of genetics a deaf parent did not always have deaf children. In the 20th century, the local population has mixed the people off the island and the rate of deafness has fallen.
选项
A、The island has become famous for its research facilities.
B、The patterns of marriage have changed.
C、Many deaf people have regained their hearing.
D、Meat of the original population has left the island.
答案
B
解析
转载请注明原文地址:https://tihaiku.com/zcyy/2878753.html
相关试题推荐
[originaltext]W:Dad!M:Yes?What’sthematter,Mary?W:I’mwonderingifIsh
[originaltext]Lisa:David,couldyouexplainthecompany’sorganizationtome,
[originaltext]Lisa:David,couldyouexplainthecompany’sorganizationtome,
[originaltext]Lisa:David,couldyouexplainthecompany’sorganizationtome,
[originaltext]M:Weren’ttheresupposedtobeabout40peopleenrolledinthec
[originaltext]M:Weren’ttheresupposedtobeabout40peopleenrolledinthec
[originaltext]M:Weren’ttheresupposedtobeabout40peopleenrolledinthec
[originaltext]M:Weren’ttheresupposedtobeabout40peopleenrolledinthec
[originaltext]Itislogicaltosupposethatthingslikegoodlaborrelation
[originaltext]Itislogicaltosupposethatthingslikegoodlaborrelation
随机试题
(1)ThereadermayrestsatisfiedthatTom’sandHuck’swindfall(意外之财)made
WhatdidthegrandfatherdoinTrafalgarSquare?He______________.[originalt
ChooseTHREElettersA-F.Writeyouranswersinboxes11-13onyouranswersheet
Intheinformationtechnologyindustry,itiswidelyacknowledgedthathoww
CordiaHarringtonwastiredofstandingupalldayandsmellinglikeFrench
[originaltext]W:I’mmakingalist,havewerunoutofanything?M:Yes,I’ver
根据我国的有关规定,如果初步设计总概算超过可行性研究报告所确定的投资估算额的(
关于代理的说法,错误的是( )。A.代理人应在代理权限内进行民事活动 B.代
房地产经纪机构品牌管理的特点主要体现在( )。A、品牌管理的目标是提升客户价
下列不属于会计核算环节的是()。A、确认 B、计量 C、预算 D、报告
最新回复
(
0
)