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
57
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
brain
解析
转载请注明原文地址:http://tihaiku.com/zcyy/3724644.html
相关试题推荐
Aresearchersaysleadintheenvironmentcouldbeamajorcauseofviolence
Aresearchersaysleadintheenvironmentcouldbeamajorcauseofviolence
Aresearchersaysleadintheenvironmentcouldbeamajorcauseofviolence
Aresearchersaysleadintheenvironmentcouldbeamajorcauseofviolence
Aresearchersaysleadintheenvironmentcouldbeamajorcauseofviolence
Intheearly1950stheresearcherswhoproducedthefirstcladglassoptical
Intheearly1950stheresearcherswhoproducedthefirstcladglassoptical
Intheearly1950stheresearcherswhoproducedthefirstcladglassoptical
Intheearly1950stheresearcherswhoproducedthefirstcladglassoptical
Intheearly1950stheresearcherswhoproducedthefirstcladglassoptical
随机试题
Today,theTowerofLondonisoneofthemostpopulartourist【1】andattracts
Thatexperienceinfluencessubsequentbehaviorisevidenceofanobviousbu
Thequalitiesofmyhometown,______onmeasaboy,hadaprofoundeffectonth
当鼓风机改变工况运行时,离心式煤气鼓风机工艺调节的常用方法有()A.出口调节
患者输血5分钟后即出现寒战,高热,头痛,腰背部剧痛,心前区压迫感。检查:血压78
沪深300股指期货的交割结算价为最后交易日标的指数最后两小时的()。A、算术平
王先生计划申请个人耐用消费品贷款,他能申请的最高款额度是()万元。A:2B:5
某女性患者,60岁。无牙颌,全口义齿初戴时发现,上颌义齿在休息状态及咀嚼时不松动
(2012年真题)某集团公司有A、B两个控股子公司,采用集权与分权相结合的财
已知折现率i>0,现金流量图如下图所示。于是,正确的说法包括( )。 A.A1
最新回复
(
0
)