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
52
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
Oldstereotypesdiehard.Pictureavideo-gameplayerandyouwilllikelyima
[originaltext]Waterscootersarewatervehiclesthatlookverymuchlikemot
异染性脑白质营养不良属于哪种遗传性疾病A、X连锁隐性遗传 B、线粒体遗传 C
患儿男性,4岁。因咽喉疼痛开始氨苄西林治疗。5天后,因高热和颈部疼痛入急诊科,被
制定薪酬制度的基本程序
会员制期货交易所应当召开理事会临时会议的情形有()。A.1/4以上理事联名提议
患者,女,25岁。身体状况良好,主诉近期计划怀孕,到妇幼保健医院口腔科进行口腔检
表示车辆拖挂能力利用程度的指标是()。A.实载率 B.行程利用率 C.车辆工
某地为推广先进企业的生产经营管理经验,对效益最好的几个企业进行调查,此种调查属于
当改性沥青SMA混合料高温碾压有推拥现象时,应复查其级配,且不得采用()碾压,以
最新回复
(
0
)