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
ADHD Linked to Air Pollutants Children have an increased of attention problems, seen as early as grade school, if their nose
ADHD Linked to Air Pollutants Children have an increased of attention problems, seen as early as grade school, if their nose
admin
2015-08-05
55
问题
ADHD Linked to Air Pollutants
Children have an increased of attention problems, seen as early as grade school, if their noses inhaled(吸入)a certain type of air pollution when they were pregnant. That’s the finding of a new study. Released when things aren’t burned completely, this pollution is known as polycyclic aromatic hydrocarbons, or PAHs. The biggest sources of these PAHs: the burning of fossil fuels, wood and trash.
Frederica Perera works at Columbia University’s Mailman School of Public Health in New York City. She researches how exposure to things in the environment affects children’s health. In a new study, she and her team studied the exposure to air pollution of 233 nonsmoking pregnant women in New York City. Because burning tobacco can spew(排放)PAHs into the air and lungs, Perera’s team focused on nonsmokers. The researchers wanted to probe(探查)other sources of PAHs, ones that’s would have been hard for an individual to avoid.
The team started by testing the blood of each woman during pregnancy. The reason: Any PAHs in a woman’s blood would also be available to the baby in her womb. Nine years later, the researchers investigated signs of attention problems in those children, now age 9. They asked each child’s mother a series of questions. These included whatever her child had problems doing things that needed sustained(长期的)mental effort, such as homework or games with friends. The scientists also asked if the kids had trouble following instructions or made frequent, careless mistakes. All of these can be symptoms of a disorder called Attention Deficit Hyperactivity Disorder, or ADHD. About one in U. S. children has ADHD.
Among the women studied, traffic and home heating were the primary sources of air pollution exposure, Perera and her team suspect. Some of these women had low levels of PAHs in their blood. Others had high levels. Those with high levels were five times as likely to have children who showed attention problems by age 9. The new findings were published November 5 in the journal PLOS ONE.
The main purpose of the research was to find out how exposure to PAHs played a role in harming the subjects’ physical health.
选项
A、Right
B、Wrong
C、Not mentioned
答案
B
解析
根据第二段“The researchers wanted to probe(探查)other sources of PAHs,ones that’swould have been hard for an individual to avoid.”可知,研究的目的是找出除香烟外其他能排放多环芳烃的原料。题干陈述的是所有可以排放多环芳烃的原料,与原文不符。故选B。
转载请注明原文地址:https://kaotiyun.com/show/XxQd777K
本试题收录于:
职称英语理工类C级题库职称英语分类
0
职称英语理工类C级
职称英语
相关试题推荐
TalkingtoKidsaboutSARS(非典)SchoolagechildrenmaybelearningaboutSARSfromadultsandthemedia,butmaynotknowwh
LoweringtheRiskofHeartDiseaseLikemillionsofotherAmericans,Icomefromafamilywithahistoryofheartdisease.My
Inmostsectorsoftheeconomy,itisthesellerwhoattemptstoattractapotentialbuyerwithvariousinducementsofprice,qu
SharpshooterAnnieOakleyperformedastonishingfeatsofmarksmanshipasthestarofBuffaloBill’sWildWestShowbeginningin
RelievingthePain"Exercisemaybethebesttreatmentofchronicpain,"saydoctorsatanewclinicfordealingwithpain
GrossNationalHappinessInthelastcentury,newtechnologyimprovedthelivesofmanypeopleinmanycountries.However,on
AgifttotheUnitedStatesfromFrance,theStatueofLibertywasassembledanddedicatedin1886.
ImproveComputer-researchSkillsLikemanycollegestudents,JoseJuarezcarriesaroundapocket-sizedcomputerthatletshi
Somechildrendisplayanunquenchablecuriosityabouteverynewthingtheyencounter.
FinancialRisksSeveraltypesoffinancialriskareencounteredininternationalmarketing(themajorproblemsincludecomme
随机试题
下坡路制动失效后,在不得已的情况下,可用车身侧面擦撞山坡,迫使机动车减速停车。
用来全面管理计算机系统资源的软件叫__________。()
十进制数0.6875转换为二进制数为_______。
______determinesagoodmealvariesfromcountrytocountry.
气血亏虚、气不摄血引起的血证有
骨关节炎常见于以下哪些关节
一天,一位年轻的妈妈心急如焚地来找心理医生。心理医生招呼她坐下,她急不可待地对医生说:“医生,我的孩子4岁半了,近来表现一反常态。前几天,有位同学来到我家,问他:‘爸爸喜欢你还是妈妈喜欢你?’他说:‘爸爸喜欢你。’弄得这位尚未结婚的朋友(女)满脸尴尬。”“
某天,林伯的水果摊三种水果的价格分别为:苹果6元/斤,芒果5元/斤,香蕉3元/斤。当天,苹果与芒果的销售量之比为4:3,芒果与香蕉的销售量之比为2:11,卖香蕉比卖苹果多收入102元。林伯这天共销售三种水果()斤。
有人说:孤独是蚌病成珠。忍耐痛苦的结果是得到那颗美丽绝伦的珍珠,_________相反,乐于独处的人把独处看成难得的享受。独处,最有利于想象力的发挥。独对自然,心灵会像宇宙一样深邃;独观书籍,思想会像电波一样通达古今;独赏音乐,情绪会像雪莲一样玉洁冰清;独
下面列出了系统维护工作流程中的几个关键步骤,正确的工作顺序是(65)。①用户提交维护申请报告②交付使用③更新文档④测试⑤核实和评价维护申请报告⑥制定维护计划⑦实施维护
最新回复
(
0
)