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1、Unit3Ahealthylife高考试题一体裁话题词数难度建议时间说明文麻疹在历史上带来的危害及麻疹患者数量增多的原因362★★★★☆6分钟（2017·北京卷阅读理解)Measles(麻疹),whichoncekilled450childreneachyearanddisabledevenmore,wasnearlywipedoutintheUnitedStates14yearsagobytheuniversaluseoftheMMRvaccine(疫苗).Butthediseaseismakingacomeback,causedbya
2、growinganti-vaccinemovementandmisinformationthatisspreadingquickly.Alreadythisyear,115measlescaseshavebeenreportedintheUSA,comparedwith189foralloflastyear.Thenumbersmightsoundsmall,buttheyaretheleadingedgeofadangeroustrend.Whenvaccinationratesareveryhigh,astheystillareint
3、henationasawhole,everyoneisprotected.Thisiscalled“herdimmunity”,whichprotectsthepeoplewhogethurteasily,includingthosewhocan’tbevaccinatedformedicalreasons,babiestooyoungtogetvaccinatedandpeopleonwhomthevaccinedoesn’twork.Butherdimmunityworksonlywhennearlythewholeherdjoins
4、in.Whensomerefusevaccinationandseekafreeride,immunitybreaksdownandeveryoneisinevenbiggerdanger.That’sexactlywhatishappeninginsmallneighborhoodsaroundthecountryfromOrangeCounty,California,where22measlescaseswerereportedthismonth,toBrooklyn,N.Y.,wherea17-year-oldcausedanout
5、breaklastyear.Theresistancetovaccinehascontinuedfordecades,anditisdrivenbyarealbutverysmallrisk.Thosewhorefusetotakethatriskselfishlymakeotherssuffer.Makingthingsworsearestatelawsthatmakeittooeasytooptout(决定不参加)ofwhataresupposedtoberequiredvaccinesforallchildrenenteringki
6、ndergarten.Seventeenstatesallowparentstogetanexemption（豁免),sometimesjustbysigningapapersayingtheypersonallyobjecttoavaccine.Now,severalstatesaremovingtotightenlawsbyaddingnewregulationsforoptingout.Butnoonedoesenoughtolimitexemptions.Parentsoughttobeabletooptoutonlyforlim
7、itedmedicalorreligiousreasons.Butpersonalopinions?Notgoodenough.Everyoneenjoysthelife-savingbenefitsvaccinesprovide,butthey’llexistonlyaslongaseveryonesharesintherisks.63.Thefirsttwoparagraphssuggestthat____________.A．asmallnumberofmeaslescasescanstartadangeroustrendB．the
8、outbreakofmeaslesattractsthepublicattentionC．anti-vaccinemovementhasitsmedicalreasonsD．informati
