职称英语历年真题理工A阅读判断精选

职称英语历年真题理工A阅读判断精选职称英语历年真题理工A阅读判断精选　　xx年可以开始备考啦，建议大家边学边练，巩固知识，下面是网提供给大家关于职称英语历年真题理工A阅读判断精选，希望对大家的备考有所帮助　　Children havean increasedof attentionproblems seenas earlyas gradeschool.If theirnoses inhaled吸入a certaintype ofair pollutionwhen theywere pregnant.Thats thefinding ofa newstudy,released whenthings arentburned pletely,this pollutionis knownas polycyclicaromatic hydrocarbonsof PAHs.　　The biggestsources ofthese PAHs:the bruningof fossilefuels,wood andtrash.Frederica Pereraworks atColumbia UniversitysMailman Schoolof publicHealth isNe YorkCity.She andher teamstudied thexposure toair pollutionof233nonsmoking pregantwomen inNew YorkCity.　　Because burningtobao canspew排放PAHs intothe airand lungs.Pereras teamfocused onnonsmokers.　　The researchersinvestigated signsof attentionproblems inthose children,now age

9.They askedeach childsmother aseries ofquestions.These includedwahtever herchild hadproble...。