北京市朝阳区高考英语二轮复习 阅读理解精练(5) 试题VIP免费

北京朝阳区2016高考英语阅读理解（二轮）精练（5）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。AirpollutionisaleadingcauseofcancerandclassifiedamongGroup1,ortop,humancarcinogens(致癌物质),saidtheInternationalAgencyforResearchonCancer(IARC),whichistheWorldHealthOrganization's(WHO)canceragency,onOct17,2013.ThemostwidelyusedsystemforclassifyingcarcinogenscomesfromtheIARC,whichplacesthemintofivegroups.Group1carcinogensdefinitelycausecancerinhumans.Group2Aisprobablycarcinogenictohumans,Group2Bispossiblycarcinogenic,thecarcinogenicityofGroup3inhumansisunclassifiable,andGroup4isprobablynotcarcinogenictohumans.Onlyalittlemorethan100areclassifiedasGroup1cancer-causingsubstances,includingultravioletradiationandtobaccosmoke.“Ourtaskwastoevaluatetheaireveryonebreathesratherthanfocusonspecificairpollutants,”thelARC'sDanaLoomissaidinastatement.“Theresultsfromthereviewedstudiespointinthesamedirection:theriskofdevelopinglungcancerissignificantlyincreasedinpeopleexposedtoairpollution.”In2010,lungcancerresultingfromairpollutionkilled223,000peopleworldwide,andtherewasalsoconvincingevidencethatitincreasestheriskofbladder(膀腕)cancer,accordingtotheIARC.Airpollutionisalreadyknowntoraiserisksforawiderangeofillnesses,includingrespiratoryandheartdiseases.Airpollutionisglobal,althoughthelevelsofitvaryoverspaceandtime.LoomissaidpeopleinAsia,easternNorthAmerica,someplacesinCentralAmericaandMexico,aswellasNorthAfricahaverelativelyhighexposure.Developingcountrieswithlargepopulationsandboomingmanufacturingsectors,suchasChina,areparticularlyatrisk.ManycitiesinChina,suchasBeijing,frequentlyseesmog.Thisweek,Harbin,thecapitalcityofHeilongjiangprovince,becamethefirstChinesecitytoofficiallysuspendclassesduetoserioussmogManydevelopedcountriesfacesimilarproblems,althoughtoalesserdegreethanmostdevelopingnations.InEurope,levelsofmanypollutantshavefallen.Butbetween91and96percentofEuropeanslivingincitiesareexposedtolevelsofPM2.5—tinyparticleswithadiameteroflessthan2.5micrometers—thatarehigherthantheWHOsafetylimits,saysareportpublishedbytheEuropeanEnvironmentAgencyonOct15.Althoughboththecompositionandlevelsofairpollutioncanvarydramaticallyfromonelocationtotheother,the1ARCsaiditsconclusionsapplytoallregionsoftheworld.“Giventhescaleoftheexposureaffectingpeopleworldwide,thisreportshouldsendastrongsignaltotheinternationalcommunitytotakeactionwithoutfurtherdelay,”saidChristopherWild,directoroftheIARC.1、Whatmightbethebesttitleofthepassage?A．SignalsofairpollutionB．SafetylimitsofairpollutionC．Airpollution,cancerriskD．Airpollution,smogrisk2、What’sthemaintaskofIARC?A．Tofocusoncancer-causingsubstances.B．Toevaluatetheairquality.C．Tostudythedevelopingriskofcancer.D．Tosendsignalstotheinternationalcommunity.3、Whyshouldtheinternationalcommunitytakeactionwithoutfurtherdelay?A．Thecompositionandlevelsofairpollutionvaryfromplacetoplace.B．Moreandmorepeopleindevelopingcountriesareexposedtoairpollution.C．Developedcountriesfaceairpollution,thelevelofwhichishigherthanthesafetylimits.D．Alargenumberofpeopleworldwideareexposedtoairpollution.【参考答案】1—3、CBD由(2013山东临沂高三一模)改编Childrenwillfinditmoredifficulttobuycigarettesasvendingmachines(自动售货机)sellingtobaccowillbeofficiallybannedinEnglandtoday.AccordingtotheBritishHeartFoundation(BHF),around200,000youngpeoplestartsmokingregu...