资源描述：
《北京朝阳区2016高考英语阅读理解（二轮）精练（5）含答案》由会员上传分享，免费在线阅读，更多相关内容在学术论文-天天文库。
1、北京朝阳区2016高考英语阅读理解（二轮）精练（5）含答案【由江苏省盐城市2014模拟改编】阅读理解。阅读下面短文，从每题所给的A、B、C、D四个选项中，选出最佳选项。AirpollutionisaleadingcauseofcancerandclassifiedamongGroupl,ortop,humancarcinogens(致癌物质bsaidtheInternationalAgencyforResearchonCancer(IARC),whichistheWorldHealthOrganization's(WHO)canceragency,onOct17,2013.Themostw
2、idelyusedsystemforclassifyingcarcinogenscomesfromtheIARC,whichplacesthemintofivegroups.Group1carcinogensdefinitelycausecancerinhumans.Group2Aisprobablycarcinogenictohumans,Group2Bispossiblycarcinogenic,thecarcinogenicityofGroup3inhumansisunclassifiable,andGroup4isprobablynotcarcinogenictohumans.On
3、lyalittlemorethan100areclassifiedasGroup1cancer-causingsubstances,includingultravioletradiationandtobaccosmoke."Ourtaskwastoevaluatetheaireveryonebreathesratherthanfocusonspecificairpollutants,"thelARCsDanaLoomissaidinastatement."Theresultsfromthereviewedstudiespointinthesamedirection:theriskofdev
4、elopinglungcancerissignificantlyincreasedinpeopleexposedtoairpollution."In2010,lungcancerresultingfromairpollutionkilled223,000peopleworldwide,andtherewasalsoconvincingevidencethatitincreasestheriskofbladder(膀月宛)cancer,accordingtotheIARC.Airpollutionisalreadyknowntoraiserisksforawiderangeofillness
5、es,includingrespiratoryandheartdiseases.Airpollutionisglobal,althoughthelevelsofitvaryoverspaceandtime.LoomissaidpeopleinAsia,easternNorthAmerica,someplacesinCentralAmericaandMexico,aswellasNorthAfricahaverelativelyhighexposure.Developingcountrieswithlargepopulationsandboomingmanufacturingsectors,
6、suchasChina,areparticularlyatrisk.ManycitiesinChina,suchasBeijing,frequentlyseesmog.Thisweek,Harbin,thecapitalcityofHeilongjiangprovince,becamethefirstChinesecitytoofficiallysuspendclassesduetoserioussmogManydevelopedcountriesfacesimilarproblems,althoughtoalesserdegreethanmostdevelopingnations.InE
7、urope,levelsofmanypollutantshavefallen.Butbetween91and96percentofEuropeanslivingincitiesareexposedtolevelsofPM2.5—tinyparticleswithadiameteroflessthan2.5micrometers—thatarehigherthantheWHOsafetylimits,saysareport
