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
A、The patterns of marriage have changed. B、Many deaf people have regained their hearing. C、Most of the original population has l
A、The patterns of marriage have changed. B、Many deaf people have regained their hearing. C、Most of the original population has l
admin
2013-03-11
57
问题
Good morning, students. I hope you have read the two books about speech. Today’s lecture deals with the presence of the unusually large deaf population that existed on the Massachusetts island of Martha’s Vineyard for about three centuries. From the settlement of the islands in the 1640s to the 20th century, 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, setting an example of the genetic patterns for the inheritance of deafness. Indeed in the late 18th century 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 telephone and a prominent investigator into hearing loss, visited Martha’s Vineyard to study the population. But because the principles of genetics and inheritance were still unknown, he was not able to explain the patterns of deafness and why a deaf parent did not always have deaf children. In the 20th century, the local population began to marry people off the island and the rate of deafness started to fall.
选项
A、The patterns of marriage have changed.
B、Many deaf people have regained their hearing.
C、Most of the original population has left the island.
D、The island has become famous for its research facilities.
答案
A
解析
转载请注明原文地址:https://kaotiyun.com/show/JBr7777K
0
大学英语四级
相关试题推荐
A、Apondcanbecomparedtoaround-the-clockrestaurant.B、Allkindsofplansandanimalswillmoveinsoonafterapondisdug
A、Hehasjustreturnedfromalongvacation.B、Hedoesn’thaveenoughtimetotakemoreclasses.C、Hewassick,butheisgettin
Asshewalkedroundthehugedepartmentstore,EdithreflectedhowdifficultitwastochooseasuitableChristmaspresentforh
Inmyfamily,weweretaughtandshownbyexamplesthatpoliticscanbeanobleprofession,thateachofusshould【B1】______the
ARoofoverOurHeadsManhasthreebasicneeds:food,clothing,andshelter.Ifamanlivesinawarmclimate,clothingis
A、In1946.B、In1957.C、In1959.D、In1960.C事实细节题。文中信息直截了当,Althea于1959年成为专业选手,听数字是考生感觉比较困难的一个问题,这还需要在平时多加训练。
A、Dangerous.B、Hard.C、Exciting.D、Dull.D综合推断题,文章最后提到Mostofthetime...theyseenothingmoreexcitingthantheocean,即大多数时间海岸警
A、Shedidn’tunderstandwhatEvawassaying.B、Evashouldhavebeenmoreactive.C、Evadidn’tseemtobenervousatallduringh
A、Shesawanad.inthenewspaper.B、Shelearnedaboutitfromafriend.C、Sheheardaboutitduringatelevisioninterview.D、S
MostparentsIsupposehavehadtheexperienceofreadingabedtimestorytotheirchildren.Andtheymusthaverealizedhowdif
随机试题
下列属于多道批处理系统的特征的是【】
虐待部属罪的特征。
女性,43岁。自己触及下腹部肿块达脐下10个月,尿频12个月,月经周期正常,经期延长3个月,下腹部坠胀感明显,体力劳动时心悸,停经40天后出现下腹部疼痛,阴道出血较多,内混有膜样组织,并伴有恶心、呕吐、发热和尿频、尿急。妇科检查:子宫14周妊娠大,宫体前壁
屋面卷材防水层上有重物覆盖或基层变形较大时,卷材铺贴应优先采用的铺贴方法有()。
关于海关发票,下列描述中正确的有()。
非公开募集基金财产的证券投资,包括买卖公开发行的股份有限公司股票、债券、基金份额,以及()规定的其他证券及其衍生品种。
某公司2012年年初拥有一栋办公大楼原值为30000万元,2012年2月28日将其中部分闲置房间出租,租期2年,出租部分的房产原值为5000万元,租金每年1000万元。当地政府规定计算房产余值减除比例为20%,2012年该公司应缴纳房产税()万元
某建筑安装企业为增值税一般纳税人,从事建筑安装和设备经营性租赁业务,所有建筑服务业务均由直接管理的项目部施工或分包,自当月开始投建新办公大楼。2017年10月发生与增值税相关的业务如下:(1)本地A建筑项目为营改增后的项目,采取一般计税办法,于当月竣
把下面的六个图形分为两类,使每一类图形都有各自的共同特征或规律,分类正确的一项是()。
InternetdatashowsthatAmericanyoungeradultshavebecometheprimarygroupmadaboutalteringtheirpersonalappearance.Onc
最新回复
(
0
)