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
53
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/GxQd777K
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
TalkingtoKidsaboutSARS(非典)SchoolagechildrenmaybelearningaboutSARSfromadultsandthemedia,butmaynotknowwh
From1994to1998thenumberofAmericanswhohaddonatedakidneyreached244.Peoplewithheartdisease,diabetesandhighbl
Itisreportedthatonlyapartofpeopleexperienceintheirlife.Paraplegicsandtetrap1egicsarepeoplewhomosteasilyexp
Painiseasiertoendureifyouknowyoucanendit.SpeakersatasessiononpainattheBritishAssociation’spsychologysecti
1.Cancerisadiseaseinwhichcellsmultiplywithoutcontrol,destroyhealthytissue,andendangerlife.About100kindsofca
Manyscientistshavebeenprobingpsychologicalproblems.
Theworstagoniesofthewarwerenowbeginning.
Hetriedtoassemblehisthoughts.
随机试题
下面()正确表示了int类型的聚会范围。
王某户籍所在地是甲市A区,工作单位所在地是甲市B区。2002年1月王某在乙市出差时因涉嫌嫖娼被乙市A区公安分局传唤,后被该公安分局以嫖娼为由处以罚款500元。在被处罚以前,王某被留置于乙市B区两天。经复议王某对罚款和留置措施提起行政诉讼,下列法院中对本案没
苏轼《前赤壁赋》中所指的“赤壁”位于今天湖北的()
女性,55岁。诊断为特发性血小板减少性紫癜,经泼尼松治疗1年后,血小板20×109/L,但仍在维持服用泼尼松30mg/d。关于该患者的叙述。正确的是
按债券发行主体的不同,债券可分为()等。
根据《水利水电工程施工合同和招标文件示范文本》(GF—2000—0208),承包人的一般义务和责任包括()等。
《行政诉讼法》规定,行政诉讼期间,法院对行政诉讼的一审判决下列()情形,可以判决变更。
对于募股规模较大的项目来说,每个国际配售地区通常要安排( )主要经办人。
下列哪些选项属于公安法制工作的主要内容?()
A、客人B、女的丈夫C、检查人员A
最新回复
(
0
)