首页
登录
职称英语
A researcher says lead in the environment could be a major cause of violence
A researcher says lead in the environment could be a major cause of violence
游客
2024-08-18
7
管理
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. [br]
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
professor
解析
转载请注明原文地址:https://tihaiku.com/zcyy/3724642.html
相关试题推荐
Aresearchersaysleadintheenvironmentcouldbeamajorcauseofviolence
Aresearchersaysleadintheenvironmentcouldbeamajorcauseofviolence
Aresearchersaysleadintheenvironmentcouldbeamajorcauseofviolence
Aresearchersaysleadintheenvironmentcouldbeamajorcauseofviolence
Aresearchersaysleadintheenvironmentcouldbeamajorcauseofviolence
Intheearly1950stheresearcherswhoproducedthefirstcladglassoptical
Intheearly1950stheresearcherswhoproducedthefirstcladglassoptical
Intheearly1950stheresearcherswhoproducedthefirstcladglassoptical
Intheearly1950stheresearcherswhoproducedthefirstcladglassoptical
Intheearly1950stheresearcherswhoproducedthefirstcladglassoptical
随机试题
______wasoneoftheFoundingFathersoftheUnitedStates,arenownedmanofle
[originaltext]W:Hasyourbrotherfoundanapartmentyet?M;No,he’sstillliv
关于钻孔灌浆与锚固工程工程量的计算,下列说法错误的有( )。A.地下工程的固结
黄某2001年10月因医疗事故受到吊销医师执业证书的行政处罚,2002年9月向当
若曲线y=x2的一条切线Z与直线x+6y-3=0垂直,则2的方程为()A.6x
对强心苷中毒引起的重症快速性心律失常疗效最好的药物是A:普萘洛尔 B:维拉帕米
右侧颞下颌关节开口初发出单音清脆弹响,开口型先偏向右侧,弹响发生后又回到中线。关
下列关于行政许可的变更与延续的说法中,正确的是( )。A.行政许可的延续需在有效
当银行融资和用资的到期日不匹配时,可能产生()。A:法律风险 B:流动性风险
下列建设工程施工合同的风险中,属于项目组织成员资信和能力风险的是()。A.
最新回复
(
0
)