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
The ethnic group known as Ashkenazim is blessed with more than its fair share of talented minds, but is also prone to a number o
The ethnic group known as Ashkenazim is blessed with more than its fair share of talented minds, but is also prone to a number o
admin
2015-04-24
38
问题
The ethnic group known as Ashkenazim is blessed with more than its fair share of talented minds, but is also prone to a number of serious genetic diseases. Researchers now suggest that intelligence is closely linked to several illnesses in Ashkenazim Jews, and that the diseases are the result of natural selection.
The Ashkenazim are descended from Jewish communities in Germany, Austria, Poland, and Eastern Europe that date back to the 10th century. Today they make up approximately 80 percent of the world’s Jewish population.
Ashkenazim have the highest average IQ of any ethnic group, scoring 12 to 15 points above the European average. They are also strongly represented in fields and occupations requiring high cognitive ability. For instance, Jews of European ancestry account for 27 percent of U. S. Nobel science prize winners.
But the group is also associated with several neurological disorders, including Tay-Sachs, Gaucher’s, and Niemann-Pick. Tay-Sachs is a fatal hereditary disease of the central nervous system. Sufferers lack an enzyme needed to break down fatty substances in the brain and nerve cells. Gauchers and Niemann-Pick are similar, often fatal diseases.
Because Jews were discriminated against in medieval Europe, they were often driven into professions such as money lending and banking which were looked down upon or forbidden for Christians.
Historians suggest that Jews with lucrative jobs often had four, six, or sometimes even eight or nine children. Poorer families, meanwhile, tended to be smaller, possibly because they lived in over hundreds areas in which children were more prone to disease. As a result, the researchers say, over hundreds of years the Jewish population of Europe became more intelligent than their gentile countrymen.
But increased intelligence may have come at a cost, with genetic diseases such as Tay-Sachs.
Being side effects of genes that facilitate intelligence, researchers argue that highly unlikely that mutated genes responsible for these illnesses could have reached such high levels in Ashkenazim if they were not connected to cognitive performance.
While the link is difficult to prove, there is some evidence that Gaucher disease does increase a person’s IQ. Around one in three people of working age who were patients of the Gaucher Clinic at the Shaare Zedek Medical Centre in Jerusalem had professions requiring an average IQ of more than 120. This group included scientists, academics, physicians, and accountants.
Modern-day Ashkenazim are now far more likely to marry outside their ethnic group. A researcher says that he would expect a tendency for both higher IQs and associated genetic disorders to become less marked over time.
The underlined sentence in Paragraph 7 roughly means that the researchers believe that
选项
A、mutated genes have a negative influence on Ashkenazim’s intelligence
B、mutated genes have played a role in Ashkenazim’s intelligence
C、the Ashkenazim’s high intelligence is caused by the mutated genes
D、the Ashkenazim’s illnesses have greatly handicapped their performance
答案
B
解析
语义题。原句虽然肯定地说变异基因与高智商有关系,但却没有绝对说高智商就是由变异基因所导致,况且接下来的一句话就是“其中联系很难证明”。故答案为B。
转载请注明原文地址:https://kaotiyun.com/show/wNLO777K
0
考博英语
相关试题推荐
Apreviouslyunknowndisease,SARShasenteredourdailyvocabulary.Nowweliveinits【1】WhileSARS【2】centerstage,anancient
Hemovedawayfromhisparents,andmissedthem______enjoytheexcitinglifeinNewYork.
Noneofthese______isanendinitself.Theyaretentative,experimental.Theyaremovementsnottowardssomethingdefinitebut
Seariseasaconsequenceofglobalwarmingwouldimmediatelythreatenthatlargefractionoftheglobelivingatsealevel.Nea
IhaveneverseenMrs.Clarkbefore,butIknowfromhermedicalchartandthereportIreceivedfromtheprecedingshiftthatt
Withoutfanfareorlegislation,thegovernmentisorchestratingaquietrevolutioninhowitregulatesnewmedicines.Therevolu
IhadvisitedthecapitalbeforealthoughmyfriendArthurhadnot,IfirstvisitedLondonasastudent,reluctantlyreleasedfr
Whenbotheredbyotheranimalsorhumans,somespeciesofhornedlizardswillposturethreateninglyandsquirtbloodfromtheir
Inthebusyholidayseason,extrabusesareprovidedto______theexistingservice.(复旦大学2010年试题)
随机试题
膀胱三角区有蒂乳头瘤(T1期),肿瘤直径小于2cm,治疗应选择
与消渴有关的脏器主要是()
监理工程师应当按照()的要求,采取旁站、巡视和平行检验等形式,对建筑工程实施监理。
下列关于仲裁委员会独立性原则的说法,错误的是()。
下列各项属于风险融资的主要方法的是( )。
某公司优先股的发行价格是25元,并每股派发4元股息;假设投资者对其要求的收益率是8%,那么该公司优先股的市场价格应是( )元。
试述新时期幼儿园在实现双重任务的过程中遇到的挑战。
软件开发环境应该支持软件生存期(33)的活动,应易于定制、裁剪或扩充以符合用户的要求,其中(34)是指软件开发环境应能符合项目特性、过程和用户的爱好。
TheAIDSconventionwillbeheldinGlasgow.
A、Richpeople.B、Computersandlawyers.C、Amurder.D、Crime.D对话中,男士说有钱人通过计算机和律师偷盗,而不是暴力,女士说至少计算机不会杀人,并认为暴力犯罪比白领犯罪更可怕。故正确答案为D。
最新回复
(
0
)