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
professor
解析
转载请注明原文地址:http://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
Aslongaswearealive,wearelearningand,infact,someofourmostimportan
Completethenotesbelow.WriteONEWORDAND/ORANUMBERforeachanswer.
Thisyear,morethan43millionpeopleareexpectedtovisitDisney’stheme
Afterintensiveresearch,scientistshaveconcludedthatpoliticianslie.
给某患者静脉注射20%葡萄糖50ml,患者尿量显著增加,尿糖定性阳性。分析该患者
对于收费站出口车道设备,环境适应性试验检测项目包括()。A.可靠性能 B
2014年的最后一天,上海外滩,夜景璀璨。赵葳葳拉着女友潘海琴的手,准备去外滩跨
求助者:男性,38岁,私营企业总经理。 案例介绍:一次,求助者到他儿子的学校开
出租人对经营租赁的会计处理,下列表述错误的有()。A.出租人应采用直线法或
根据《电信条例》,电信用户申请安装、移装电信终端设备的,电信业务经营者应当在其公
最新回复
(
0
)