首页
外语
计算机
考研
公务员
职业资格
财经
工程
司法
医学
专升本
自考
实用职业技能
登录
外语
A、Automobile mechanics. B、Painters. C、Waiters. D、Heavy equipment mechanics. C
A、Automobile mechanics. B、Painters. C、Waiters. D、Heavy equipment mechanics. C
admin
2010-07-19
22
问题
A researcher at the University of Rochester in New York has found that workers exposed to high levels of lead on the job have an increased risk of dying from brain cancer. Epidemiologist Edwin van Wijngaarden looked at data about more than 300,000 people over a nine-year period, comparing the kinds of jobs they had with their causes of death, and he saw a correlation. Mechanics are among the workers more likely lo develop deadly brain tumors due to occupational lead exposure. He says, automobile and heavy equipment mechanics, painters and welders--who were more likely to be exposed to lead for longer periods of time--had even higher risks of developing brain cancer than workers unexposed to lead. Most research on lead has focused on its effect on children. Van Wijngaarden says not much is known about its impact over a lifetime. Wijngaarden found only 119 brain tumor deaths. He is continuing his research, looking now at patients who already have brain tumors, to see whether they have higher levels of lead in their bones than other patients.
选项
A、Automobile mechanics.
B、Painters.
C、Waiters.
D、Heavy equipment mechanics.
答案
C
解析
转载请注明原文地址:https://kaotiyun.com/show/fclO777K
0
专业英语八级
相关试题推荐
"Givemelibertyorgivemedeath."Thisisafamousstatementmadeby_____,awellknownfigureinU.S.history.
Thirty-twopeoplewatchedkittyGenovesebeingkilledrightbeneaththeirwindows.Shewastheirneighbor.Yetnoneofthe32he
Thousandsofteachersattheelementary,secondary,andcollegelevelscantestifythattheirstudents’writingexhibitsatende
1 "Internationalcommunication"iscommunicationbetweenmembersofdifferentcultures.Thisdefinitionissimple.Butt
Democracy Democracyisnotanewconcept.TheancientAthenianshadademocraticsystem.TheirdemocracywasthesameasAme
WhatistheRepublicofIrelandcalledinIrish?
A、Shewastiredofthestudyatschool.B、Shedidn’tgetenoughtoeat.C、Shehelpedtoomuchwiththechores.D、Shealwaysslep
偶然也会有一座小岛出现在地平线上,我们不知其名,但它却给人以神秘之感,那是海底峰峦的顶部,孤独、凄凉、无瑕、偏僻地矗立在海上。人们喜爱岛屿,是否因为在这难以驾驭的广大世界里有这样一叫、块易于管理的领地,人们就不知不觉地要据为已有?我想到那座岛屿一直就在那里
A、gettinginvolvedinabribery.B、dealinginanillegaltransaction.C、endangeringnationalsecurity.D、beingnegligentofhis
敦煌坐落在甘肃省西北的沙漠走廊地带,其西靠近新疆,其东是祁连山脉。这座有两千年历史的古城,曾经是联结中国和中亚的丝绸之路上一个重要的商队驻足地。如今,其吸引来客的主要原因在于:敦煌是世界上已知的佛教艺术的一个最珍贵的宝藏的所在地——莫高窟。据一幅唐石刻所载
随机试题
资本家用于购买劳动力的可变资本,它的价值()
女性,50岁。因肺炎入院,应用抗生素和输液后,体温未下降,今晨出现呼吸急促,烦躁。查体:呼吸46次/分,血压98/75mmHg,脉搏100次/分,口唇有发绀,两肺闻及哮鸣音。病人胸片示肺门斑片状阴影.边缘模糊。融合成片。血气分析:PO49mmHg,O2
一患者被人用刀划伤面部软组织,耳前区皮肤有长约6cm的纵形创口,创缘整齐,有活动出血。如有知名血管断裂.最宜采用的止血方法是()
某混凝土配比设计中,已知单位用水量为180kg,水灰比为0.7,砂率为35%,则单位石子用量为()kg。
按照《现金管理暂行条例》以及《人民币单位存款管理办法》的规定,以下做法中错误的是()。
对话式是导游与一个或一个以上的游客进行交谈的语言传递方式,其语言特点有()。
某夫妻要在假期带小孩外出旅游。当地有甲、乙两家旅行社,旅游定价都一样,但对家庭旅游都有优惠,甲旅行社表示小孩可打六折,乙旅行社表示全家可打八五折。经核算,乙旅行社要便宜100元。那么成人旅游定价是多少7
With______exceptions,theformerpresidentdoesnotappearinpublicnow.
AccordingtoUNICEF,around564millionIndians,nearlyhalfthepopulation,stilldefecateintheopen—infields,forests,ne
Clothes,decorations,physique,hairandfacialfeaturesgiveagreatdealofinformationaboutus.Forinstance,wewearclothe
最新回复
(
0
)