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
36
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
brain
解析
转载请注明原文地址:https://jikaoti.com/ti/eELMFFFM
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
Ballroomdancingusedtobeseenassomethingrather【T1】________thatoldpeoplemightdo.Forthepastfiveyearsthough,the【T2
Iamgoingtoworkinatotallynewenvironment.【T1】________.Iamusedtoworkinginquitehigh-techsortofindustrythathas
A、Becausehelackedworkexperience.B、Becausehehadatightclassschedule.C、Becausethelocationsofthosefirmswereremote
TheGreatLifeTheCherokeebeliefsregardingtheenvironmentandconservation.HumanbeingsareapartoftheGreatL
DoSomethingtoImproveYourLifeWrongopinionstowardslife.wrongopinions—peoplehavetoacceptwhateverlife【
据统计数字表明,家庭平均人口的增长与母亲受教育的年限成反比。Statisticsshowthat——.
成功并不局限于你品格的某一方面,而是与你各部分潜能的发展相关。——acertainpartofyourpersonalitybutis——thedevelopmentofyourfullpotential.
俗话说“民以食为天”。【T1】饮食文化,即围绕着人们日常工作中的食物、饮料及其食用方法所形成的文化现象。(centeron)从半坡村文化遗址中发现,早在五六千年前,中国北方的黄河流域已普遍种植粟这种农作物。同样,在距今7,000年前的河姆渡文化
—Excuseme,______?—Yes.That’soneglassofwhitewine,onemineralwaterandonesandwich.Tenpounds,please.—Thanks.Isse
Howlongwillittakefornewforeststogrowback?
随机试题
我国现有的股份制商业银行的股本结构以()为主。
某女,15岁。煤气中毒,经过积极抢救后苏醒,2天后又出现神志不清,右侧肢体偏瘫,体温、血压正常,两肺呼吸音粗。进一步治疗首选
在中药的七情配伍中,具有减毒作用的配伍是
患者,男性,52岁。肝硬化,大量腹水。入院后给予利尿剂治疗,腹水量明显减少,但患者出现了淡漠少言、反应迟钝、言语不清等症状。若此时给患者做脑电图检查,最可能的改变是
患者,女性,70岁,护士巡视时发现其突然意识丧失伴抽搐,呼吸断续,瞳孔散大,在对其进行心肺复苏时。胸外按压与人工呼吸的比例应为
为了及时编制会计报表,会计人员可以提前结账,也可以延后记账。( )
短期内必补是()的特征。
下表中列出了几种限制酶识别序列及其切割位点,图1、图2中箭头表示相关限制酶的酶切位点。请回答下列问题:用图中的质粒和外源DNA构建重组质粒,不能使用SmaⅠ切割,原因是______。
产业用品市场营销的主要促销工具是()。
利用逐点插入建立序列(50,72,43,85,75,20,35,45,65,30)对应的二叉排序树以后,要查找元素30进行元素间的比较次数是()。
最新回复
(
0
)