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 researcher says lead in the environment could be a major cause of violence by young people. Doctor Herbert Needleman is a【21】_
A researcher says lead in the environment could be a major cause of violence by young people. Doctor Herbert Needleman is a【21】_
admin
2012-03-04
90
问题
A researcher says lead in the environment could be a major cause of violence by young people. Doctor Herbert Needleman is a【21】______ at the University of Pittsburgh School of Medicine in Pennsylvania and he【22】______his findings at the yearly meeting of the American Association for the Advancement of Science. Doctor Needleman says the presence of lead in the 【23】______changes the neurons that control actions and that can cause a person to act in antisocial and【24】______ways.
In the 1970s, Doctor Needleman found lower scores on【25】______even in children who did not have such signs of lead poisoning. After that, lead was【26】______gasoline and paint in the United States. Yet many homes still have old lead paint. Lead was also used in older【27】______. In fact, officials just announced stronger testing and reporting requirements as from next year for lead in American drinking water.
The newest research shows that even very small amounts of lead in bones can affect brain development. A simple【28】______can measure lead except that an X-ray process is needed to measure levels in bone. In 2004, such tests were done on 190 young people who were【29】______and the findings showed that their average levels were higher than normal. And, in 1998, three hundred children were studied and the test scores showed higher levels of【30】______problems in those with increased levels of lead. Yet these levels were still considered safe by the government.
A researcher says lead in the environment could be a major cause of violence by young people. Doctor Herbert Needleman is a professor at the University of Pittsburgh School of Medicine in Pennsylvania and he presented his findings at the yearly meeting of the American Association for the Advancement of Science. Doctor Needleman says the presence of lead in the brain changes the neurons that control actions and that can cause a person to act in antisocial and criminal ways.
In the 1970s, Doctor Needleman found lower scores on intelligence tests even in children who did not have such signs of lead poisoning. After that, lead was removed from gasoline and paint in the United States. Yet many homes still have old lead paint. Lead was also used in older water pipes. In fact, officials just announced stronger testing and reporting requirements as from next year for lead in American drinking water.
The newest research shows that even very small amounts of lead in bones can affect brain development. A simple blood test can measure lead except that an X-ray process is needed to measure levels in bone. In 2004, such tests were done on 190 young people who were in jail and the findings showed that their average levels were higher than normal. And, in 1998, three hundred children were studied and the test scores showed higher levels of aggression and learning problems in those with increased levels of lead. Yet these levels were still considered safe by the government.
选项
答案
removed from
解析
转载请注明原文地址:https://kaotiyun.com/show/OVVK777K
本试题收录于:
C类竞赛(非英语专业本科)题库大学生英语竞赛(NECCS)分类
0
C类竞赛(非英语专业本科)
大学生英语竞赛(NECCS)
相关试题推荐
【T1】________,themostimportantthingwhenchoosingahotelforaninternationalconferenceisthemeetingroomorrooms.Fore
LeadTimeLeadtimeistheperiodbetweenacustomer’sorderandthedeliveryofthefinalproduct.Asmallorderofapre-e
Theoldladyhasdevelopeda________coughwhichcannotbecuredcompletelyinashorttime.
WhichofthefollowingadverbscanNOTbeusedtocomplete"Thisapplicantis________betterthanthatone"?
Theirwithdrawalfromtheworldeconomyisvirtuallyimpossible.Theunderlinedpartmeans________.
Sallycontributedalottotheproject,butsheneveronceacceptedallthe________forherself.
TheGreatMistakeHaveyoueverreachedintherefrigeratorforyourfavouritesnackandfounditcoveredwithanasty-look
Conventionalwisdomsaystreesaregoodfortheenvironment.Theyabsorbcarbondioxide—agreenhousegas—fromtheatmosphereand
Whoisthewomanmostprobablyspeakingto?
中国是世界上种茶最早、制茶最精、饮茶最多的国家,是茶的故乡。最初,茶只是被作为一种药材而非饮品。【T1】后来,古人逐渐将茶从药材中分离出来成为一种清热的饮料。(定语从句)在那之后,中国的茶文化逐渐形成。【T2】据史料记载,西汉时期已经有
随机试题
配划基准是配划工件的什么基准?
A、先天性铁储存不足B、铁摄入不足C、铁丢失过多D、铁吸收减少E、生长发育快母患缺铁性贫血的胎儿可()
关于200MW及以上机组主厂房内的低压厂用电供电方式和电压,下述选项正确的是()。
如图5—7—8所示,矩形截面杆的截面宽度沿杆长不变,杆的中段高度为2a,左、右段高度为3a,在图示三角形分布荷载作用下,杆的截面m—m和截面n一n分别发生()。
下列关于电击和电伤的描述错误的是()
证券交易所会员参与国债买断式回购引入交易权限管理制度。()
不等式2x-k≤0的正整数解是1,2,3,那么k的取值范围是______。
教育心理学作为一门独立的学科,从60年代到70年代末为()。
y=y(x)由确定,则=________.
请用200字左右的文字,分析发生这件事情可能的原因?请用200字以内的文字,说明应当吸取的经验和教训?
最新回复
(
0
)