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
49
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.
Nonsmoking mothers were selected because the effect of smoking on PAHs was unclear.
选项
A、Right
B、Wrong
C、Not mentioned
答案
B
解析
由第二段内容可知,研究者们选择不吸烟的妈妈,是已经知道了香烟可以释放多环芳烃,为了排除香烟对研究结果的影响,而找出其他可以排放多环芳烃的物质。因此题干叙述错误,选B。
转载请注明原文地址:https://kaotiyun.com/show/doLd777K
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
NewFoodsandtheNewWorldInthelast500years,nothingaboutpeople—nottheirclothes,ideas,orlanguages—haschangeda
IQ-geneIntheangrydebateoverhowmuchofIQcomesfromthegenesthatchildreninheritfromparentsandhowmuchcomesf
CannedFoods:ConvenienceandNutritionMeetingyourfamily’snutritionalneedsmayseemdifficultconsideringtoday’sbusyl
ResearchbyDr.CameronseemstosuggestthatexercisecanTobebeneficial,exerciseforolderpeopleshould
ThetiesymbolizesallofthefollowingexceptWhobroughttheFrenchmen’sneckweartoBritain?
Themostcrucialproblemanyeconomicsystemfacesishowtouseitsscarceresources.
Weareworriedaboutthisfluidsituationfullwithuncertainty.
AInsectsandSurfaceTensionBExpansionandContractionCTemperatureofBoilingPointofLiquidsDPrincipalsinphysics
Peopleknewlongagohowanearthquakestarts.Assoonasanearthquakeoccurs,studentsshouldleavethebuilding.
WeightonandofftheEarthWearesousedtoourlifeonthesurfaceoftheearththatitcanbequiteaneffortforourmi
随机试题
A.易发生肱动脉损伤B.易发生胭动脉损伤C.易发生坐骨神经损伤D.易发生桡神经损伤股骨颈骨折
通常所说的血型是指
某女,少腹隐痛不休,带下增多,大便时结时溏,时有低热,舌苔薄,脉虚弦。妇科检查:双附件增厚、压痛。其证型是:
多于5岁以前发病,腹部有巨大包块是本病的特点,常有发热和高血压,血中肾素活性和红细胞生成素可高于正常( )。多见于老年人,间歇性无痛肉眼血尿是其早期表现,IVP可有阳性发现( )。
分销是指产品从生产领域向消费领域转移时所经过的路线、环节、方式、机构等的总称。按照不同的划分标准,分销渠道有很多种,邮寄属于()渠道的分销方式。
非财产性质的最轻微的一种补救性行政责任形式是()。
( )是防止内地不合格货物运抵口岸的一项有效措施。
马列主义同中国实践相结合有两次历史性飞跃,产生了“毛泽东思想”和“邓小平理论”两大理论成果。()
光照强度对某种C4植物和C3植物光合作用的影响如下图,回答下列问题:在光合作用过程中,C4植物吸收的CO2被固定后首先形成_________化合物。
Whatdoestheword"afish"(Para.1)probablyreferto?Thebesttitleforthetextmaybe______.
最新回复
(
0
)