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阅读理解健康保健类(一)CookingKillsFourMillionPeopleaYearPollutedairborneparticles（大气悬浮颗粒）kill7millionpeopleayear,reportstheWorldHealthOrganization.ThatnewsmaynotcomeasasurprisetoanyonewhohasseenimagesofchimneysinBeijing,DelhiorMexico.Butthosefactories—oreventhejammedroadwaysofmoderncities—arenotthebiggestkiller.Eachyear,some4.3millionpeopledieearlierthantheyshouldbecauseofpollutedairinsidetheirhomes,saystheWHO.What’scausingtheairinsidepeople’shomestobesopoisonousthatitkillsaround11,000peopleaday?Stoves.“Havinganopenfireinyourkitchenislikeburning400cigarettesanhour.”saysKirkSmith,aprofessorattheUniversityofCaliforniaatBerkeley,whoseresearchsuggeststhathouseholdairpollutionfromcookingkilledbetween3.5millionand4millionpeoplein2013.Notallstovescausethiskindofharm.TheonesSmith’stalkingaboutarethosethatthe3billionpeopleinthedevelopingworlduseforheatandcooking,whichburnsolidfuelssuchaswood,coal,orcropwasteinsteadofgas.Thesmokefromthosefiresproducesharmfulfineparticlesandcarbonmonoxideintohomes.Poorventilationthenpreventsthatsmokefromescaping,raisingfineparticlelevels100timeshigherthanthelimitsthattheWHOconsidersacceptable.Breathingthisairdayindayoutfinallycausesalotofdiseases:morethanathirdofthe4.3milliondieofastroke,whileaquarterdieofheartdisease.Andaroundone-thirdofannuallungdiseasedeathsworldwideareduetowastefromcoalstoves.Exposuretendstobeextremelyharmfulforthepeoplewhospendthemosttimearoundthefire—usuallywomenandyoungchildren.Infact,theWHOreportsthathouseholdairpollutionalmostdoublestheriskforchildhoodlungdisease.1.AccordingtoKirkSmith’sresearch,________.A.factoriesarethebiggestkillerworldwidenowadaysB.burning400cigarettesanhourisextremelydangerousC.householdairpollutionfromcookingissurprisinglyharmfulD.some4.3millionpeopledieearliereachyearthantheyshould2.Whatshouldbethedeadlykillerinahouseholdkitchen?A.Solidfuels.B.Coalstoves.C.Poorgas.D.Cookingsmoke.3.Theunderlinedword“ventilation”inParagraph4probablymeans________.A.airingB.cookingC.burningD.cooling4.Theauthorintendstotellpeople________.A.howtoavoidpollutedairintheirhomesB.tostopcookinginthehouseholdkitchenC.toguardagainsthouseholdpollutionfromcookingD.howtopreventchildhoodlungdiseasesinhousehold(二)Exercisenotonlyimprovesyourappearance,butalsoimprovesyourhealth.Healthexperts(专家)advisepeopletochoosephysicalactivitiesthattheyfindfun.So,whataresomeofthemostpopularforms(形式)ofexerciseintheUSA?Walkingtopsthelist.Itisconsideredtobethewaytogetexercise.Youcanwalkatanytimeandanyplace.Walkingisalsosaidtobetheleastharmfultothekneesandfeet.So,it’saperfectchoicefortheold.Anotherpopularformofexerciseisjogging.Inthe1970s,BillBowermanbroughtjoggingtotheUSA.HedidsoafterseeingthepopularityoftheactivityduringatriptoNewZealandinthe1960s.HestartedthefirstjoggingclubinAmerica.HealsohelpedfoundNike.Swimmingisalsoverypopular.ItwasthesecondmostpopularsportingactivityinAmericain2008.Thetopactivitywaswalking.Whenoneisswimming,thewholebodyisputtowork.Itissaidthatswimmingisgoodforpeoplewithspecialneeds,likepregnant(怀孕的)women.Dancingcanalsobeafunwaytoexercise.Thisisespeciallytrueforthosewhoseeexerciseassomethingthattheyshoulddo.AdancefitnessprogrammecalledZumbahasgrowninpopularityinrecent(最近的)years.ItwascreatedbyAlbertoPerezinColombiainthe1990s.In2001,hebroughttheprogrammetotheUSA.Sincethen,ithasspreadaroundtheworld.1.WhichofthefollowingcanbeputininParagraph2?A.easiestB.mostexpensiveC.mostdifficultD.coolest2.Fromthefourthparagraph,wecanlearnthat______.A.swimmingwasnotpopularin2008B.swimmingwasmorepopularthanwalkingin2008C.walkingwasthemostpopularformofexercisein2008D.it’snotgoodforpregnantwomentogoswimming3.Accordingtothelastparagraph,weknowthatZumba.A.hasaverylonghistoryB.isthenameofadanceclubC.wascreatedintheUSAD.becamepopularnotlongago4.Whatisthepassagemainlyabout?A.Theadvantagesofexercise.B.SomepopularformsofexerciseintheUSA.C.Thehistoryofsomeformsofexercise.D.Adviceonhowtochoosethebestformofexercise.(三)Howmuchsleepisenough?Tostayingoodhealth,someexpertintheUSsay,adultsshouldgetseventoeighthoursofsleep.Teenagerneedninetotenhours.Andpre-schoolchildrenneedmorethan10hoursofsleepanight.Expertssaythequality(质量)ofoursleepbecomespooraswegrowolder.Thishappensbecausethebrainunitthatcontrolssleepbeginstoweakenslowlyasweage.Expertssaythechangestartsinour30s.Bythetimewereachour50s,apersonmayhavelost50percentoftheirabilitytohavearestfulsleep.Thesepeoplehavetroublefailingandstayingasleepthroughthenight.Frommiddleageon,theseproblemsonlygetworse,andtheycanhaveabadeffectontheirhealth.Signsthatshowyoumaynotbegettingenoughsleep.You’realwayshungryoryou’vegotunwantedweight.Ifyouareinshortofsleep,certainchemicalsinyourbodywillnotworkwellandtellyourbrainintimethatyouhaveeatenenough.Youhavetroublemakingdecisions.Nothavingenoughsleepmaymakeyourbrainworkslowerinproblemsolving.Youhavetroublerememberingthings.Sleephelpspreparethebrainfornewmemories.Yourfeelingchangesunreasonably.Peoplewhodon’tsleepwellmayfeelunabletocontroltheirfeelings.Youarehavingtroubleseeing.Ifthereisashortageofsleep,youmaynotbeabletoseethingasclear