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
2015-08-04
79
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.
Traffic and home heating were considered to be the biggest sources of PAHs for the subjects in the research.
选项
A、Right
B、Wrong
C、Not mentioned
答案
B
解析
文章第一段最后一句“The biggest sources of these PAHs:the burning of fossil fuels,wood and trash.”提出,多环芳烃的最大来源是化石、木材和废物的燃烧。而交通和家庭产热只是研究范围内的最大多环芳烃产生来源。因此题干叙述错误,选B。
转载请注明原文地址:https://kaotiyun.com/show/aoLd777K
本试题收录于:
职称英语理工类B级题库职称英语分类
0
职称英语理工类B级
职称英语
相关试题推荐
StomachUlcerStomachulcersarethecauseofseverepainformanypeople.Doctorshavebeenabletohelplessenthepainof
Howeverbadthesituationis,themajorityisunwillingtoriskchange.
Virtuallyallthechildrencometoschoolbybus.
CulturalDifferencesPeoplefromdifferentculturessometimesdothingsthatmakeeachotheruncomfortable,sometimeswithou
15.Themostpressingproblemanyeconomicsystemfacesishowtouseitsscarceresources.
HeatandHealthExtremelyhotweatheriscommoninmanypartsoftheworld.Althoughhotweatherjustmakesmostpeoplehot,
Themethodsofcommunicationusedduringthewarwereprimitive.
DoubleEffectTheSupremeCourt’sdecisionsonphysician-assistedsuicidecarryimportantimplicationsforhowmedicinesee
A.whenyourplaneisabouttolandB.whenyouaretakingtabletsC.whenyousufferfromfood-poisoningD.whenyouaretravel
AInsectsandSurfaceTensionBExpansionandContractionCTemperatureofBoilingPointofLiquidsDPrincipalsinphysics
随机试题
圆锥基面距:
男性,36岁,心悸、气短5年,半年来腹胀、下肢水肿。体检:心界扩大,心尖搏动向左下移位,搏动弱,心尖部有S3,S4及Ⅱ级收缩期杂音,双肺底闻及小水泡音,下肢水肿Ⅱ度,临床拟诊扩张型心肌病人院后2天,患者发生左侧肢体软瘫,其原因最可能为
A.入院率偏倚B.信息偏倚C.现患-新发病例偏倚D.选择偏倚E.混杂偏倚限制某些人群进入研究总体的目的是控制
建筑使用管理单位在防爆检查中,通过对()等方面采取防爆措施的检查,可以达到防止燃烧和爆炸的目的。
甲公司委托乙公司加工1000件产品(属于应税消费品),1月20日发出材料,计划成本60000元,材料成本差异率为一3%。2月20日,支付加工费12000元,支付由受托方代收代缴的消费税6600元。不考虑其他因素,则下列说法不正确的是()。
社会主义经济制度是建立在()基础之上的。[2003年真题]
根据增值税法律制度的规定,下列各项中,应当征收增值税的是()。
根据行为的性质及其后果,人类行为可以划分为( )。
课程是衡量教学质量的重要“尺度”,离开这个“尺度”就无法评定教学质量的优劣。()
A市光明公司业务员甲某和本公司另一名业务员乙某代表公司按合同接受4万打进口某产品时,两人发现有溢货现象,即港商多发了200打。甲某让乙不要把这一情况告诉别人。几天后,甲某将200打该产品卖给B市个体商经营者丙某,单价为200元,并让丙将货款汇到C市甲原工作
最新回复
(
0
)