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
2023-10-18
37
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
removed from
解析
转载请注明原文地址:https://tihaiku.com/zcyy/3110077.html
相关试题推荐
Mostenvironmentalproblemsexistbecauseadequatemeasuresforpreventingthem_
(1)Menandwomentendtochoosedifferentcareerpaths,andresearchershav
(1)Menandwomentendtochoosedifferentcareerpaths,andresearchershav
Alargepartofhumanactivity,particularlyinrelationtotheenvironment,is
Conventionalwisdomsaystreesaregoodfortheenvironment.Theyabsorbcar
Conventionalwisdomsaystreesaregoodfortheenvironment.Theyabsorbcar
Conventionalwisdomsaystreesaregoodfortheenvironment.Theyabsorbcar
Supposeyouarenotsatisfiedwiththefood,serviceandenvironmentinthecant
Conventionalwisdomsaystreesaregoodfortheenvironment.Theyabsorbcar
Conventionalwisdomsaystreesaregoodfortheenvironment.Theyabsorbcar
随机试题
Solongasteachersfailtodistinguishbetweenteachingandlearning,they
Thetelevisioncommerciallookslikeone-minuteversionofthemovieCloseEn
以下人防工程顶棚做法哪个不对?( )A.1∶2水泥砂浆抹灰压光 B.钢筋混凝
女性,55岁。近1年来反复出现颜面及下肢水肿,面色无华,乏力气短,腰膝酸软,五心
结构施工阶段夜间施工噪声限值不超过()dB。A、50 B、55 C、60
A.自然分泌液采集法B.直视采集法C.摩擦法D.灌洗法E.针穿抽吸法宫颈涂片应采
可以对过细的劳动分工进行改进的方法包括( )。A.交叉作业法 B.充实业务法
关于招标代理合同的应用特点,以下说法正确的有()。A、招标代理合同仅仅体现了私法
基础心理学是研究()。 (A)正常成人心理现象的心理学基础学科 (B
根据《水利工程建设重大质量与安全事故应急预案》,下列不属于应急保证措施的是(
最新回复
(
0
)