閱讀理解DeltavarianttakesoverAnewstrainofC0VID-I9iscausingconcernascasesarerisinginmorethan130countriesandregions.Ithasbecomethegloballydominantversionofthedisease,accordingtotheWorldHealthOrganization（WHO）.TheDeltavariant（變體），sofarthemostcontagiousvariant,accordingtoChinaDaily,wasfirstfoundinIndialastOctober.Ithasshownan“unquestionablygreater”transmissibility（傳播性）thantheoriginalvariantofCOVID-19and“itisassociatedwithanincreaseddiseaseseverity”,accordingtotheUSinfectiousdiseaseexpertAnthonyFauci.WhyistheDeltavariantsoscary?TheCentersforDiseaseControlandPrevention（CDC）intheUSestimatesthatDeltacanbeasinfectiousaschickenpox（水痘），whichisoneofthemostcontagiousviruseseverknown.Eachindividualcanspreadthevirustoasmanyas"90percentofthepeopleclosetothatper-son”.WhethertheDeltavariantisdeadlierthanpreviousstrainsisnotknown.However,itcausesmorehospitalizations,accordingtoCDCdatainAugust.ButaccordingtoChinaDaily,forthosewhohavebeenvaccinated,theDeltavariantdoesn'tappeartobeasdeadly.Fewvaccinatedpeopledie,eveniftheyareinfectedbytheDeltavariant.“ChinesevaccinesareeffectiveagainsttheDeltavariant,”saidZhongNanshan,China'stopepidemiologist,atasummitinGuangzhouonJuly31.“TheprotectiveeffectofChina'svaccineincasesofseveresymptomswas100percent,andprotectionformoderate,mildandasymptomatic（無癥狀的）patientswas76.9percent,67.2percentand63.2percent,respectively,”headded.However,Zhonginsiststhatwecannotrelax.InChina,herdimmunity（群體免疫），theabilityofapopulationtoresistinfectionduetotheimmunesystemformingantibodiesagainstaspecificinfectiousagent,“maybeachievedafter83.3percentofChinesepeopleareinoculated（接種）”,Zhongsaid.ZhongbelievesthenextstepistospeedupvaccinationandthedevelopmentofavaccinetargetingtheDeltavariant.Sinovae,oneofChina'svaccinedevelopers,planstoapplyforaclinicaltrialofaDelta-specificvaccineinthethirdquarterthisyear,GlobalTimesreported. WhyistheDeltavariantsodangerous?Itisdeadlierthanotherstrains.Itisoneofthemostinfectiousviruses.Itisimmunetothevaccinesproduced.Itimpactsyoungeragegroupsmoreeasily.WhatdoesthedatagivenbyZhongNanshanshow?ThedifficultyoffittingtheDeltavariantTheeffectivenessofChinesevaccines.Thenecessityofdevelopinganewvaccine.TheharmtheDeltavariantcancausepeople.Whatarethelasttwoparagraphsmainlyabout?Whyitisimportanttoachieveherdimmunity.HowantibodiesagainsttheDeltavariantareformed.WhatshouldbedonetofighttheDeltavariantWhatchallengesthedevelopmentofDeltaspecificvaccines.ShineYourLightAseriesofmassivethunderstormshaddamagedourarearecently.Heavyrains,highwindsandlotsoflightninghadcausedflashfloodingandknockeddowntrees.Ihadspenttheafternoonpickingupbranchesoutofmyyardandthrowingthemaway.Then,justbeforeIwasgettingreadytotakemydogsfortheirlastwalkoftheday,thewarningscameonmytelevisionandphonethatanotherstormwasheadingourway.Iquicklytookmydogsoutside.Hugecloudswererollinginwhilethunderboomedoverthehills.ThedarknessseemeddarkerandscarierthanusualbecauseIknewwhatwasontheway.ThatwaswhenIsawit:thetiniestblinkoflight,uphigh,atthefarendofthemeadow（草地）behindmyhouse.Ismiled.Thefirstofthefireflies（螢火蟲）hadappearedforthesummeratjustthetime1neededtoseeitslight.Soonafewotherswereblinkingtheirlightsaswell.Itamazedmehowfartheirlighttraveledinthedarknessofthenightandhowtheydidn'tseembotheredatallbytheapproachingstorm.Ispentanextrafewminuteswatchingmylightningbug（小蟲）buddiesandtakingintheirmessageoflightbeforeheadingintogetreadyforthestorm.AsIdid,though,Inoticedthatthedarknessnolongerseemedsoscaryandthatmyfearhadbeenreplacedwithjoy.Lifedoeshaveitsshareofstorms,somecausedbynatureandsomecausedbyus.Wecan'tgothroughlifebeingscaredofthem,however.Weareheretoshineourlight.Weareheretoshareourlove.Wecanridethroughthestorms,cleanupafterthemandmakethisworldabetterplace.Takealessonfromthefireflies.Letyourlightshine.Itmayseemtiny,butyouwillbeamazedathowfaritcanbeseenandhoweasilyitcandrivethedarkaway.BYJOSEPHJ.MAZZELLAChoosethebestanswer:Whydidtheauthorsmileafterhesawfireflies?Helikesshinythings.Hehadneverseenfirefliesbefore.Theywarnedhimofthenextstorm.Theyprovidedhimwithcomfort.Whatdoesthe“messageoflight”conveyinparagraph2?Independence B.CalmnessC.Happiness D.ConfidenceWhatdoestheunderlinedword“storms”inthelastparagraphprobablyreferto?ChallengesB.ChoicesC.Dreams D.Failures4.Whatlessondidtheauthorlearnfromthefireflies?A.Itisimportanttoliveinharmonywithnature.B.Ithelpstolearnsomebasicsurvivalskills.C.Weshouldnotunderestimateourselves.D.Tinyasweare,wecanmakeadifference.JoincampusorganizationClubsportsprovidebothacompetitiveandsocialsportingexperiencetoanyPurduestudentWhetheryouarelookingtocontinuetobepartofasportyouloveorlookingfornewexperiences,thereisclubforyouateveryskilllevel.ThePurdueUniversityBaseballClubisastudent-runorganizationthatparticipatesinintercollegiate（大學(xué)間的）athleticcompetition.Weprovidestudentsanopportunitytocontinuetheirbaseballcareeratacollegiatelevel.President:JackFitzhughEmail:jfitzhu@ThePurdueGymnasticsClubisagroupofnormaleverydaystudentswho,likeyourself,wanttostayactivewhileatschool.Wepracticeduringeveninghoursfourtimesaweekduringthefallandspringsemesters.Weownandoperateequipmentforfourwomen'sandsixmen'sevents.President:MayaMcDonaldEmail:mcdonl27@ThePurdueTriathlonClub'smissionistogettogethermulti-sportathleteswhowanttotraininasocialenvironmentandpromoteinterestandparticipationintriathlons（鐵人三項(xiàng)）,duath-lon（鐵人兩項(xiàng)）,running,swimmingandcyclingeventsonthePurdueUniversitycampus.Weencourageandsupportmemberswhiletrainingtogether.Wetraveltoracesinthespringandsummertogetherandhosttworacesduringtheschoolyear.WeendouryearattheCollegiateNationalsinApril.President:KatalinKovachEmail:kovachlO@ThePurdueMen'sClubVolleyballallowsPurdueundergraduateandgraduatestudentstoplayvolleyballatacompetitive,intercollegiatelevel.Tryoutsareheldatthebeginningofeachsemesterandteamsaredividedbasedonskilllevel.Playerscomefromalloverthecountry,notjusttheMidwest.ThefirstandsecondteamstraveltotournamentsacrosstheMidwestandtotheNCVFNationaltournamenteachspring.TheclubisanNCVFandMIVArecognizedprogramandconsistentlyfinishesinthetopcompetitivedivisionsoftheregionandnation.President:BenBednarczykEmail:bbednarc@Choosethebestanswer:Whocanyoucontactifyouwanttoparticipateinabaseballgame?JackFitzhughB.MayaMcDonaldC.KatalinKovachD.BenBednarczyk.WhatmakesthePurdueGymnasticsClubspecial?Itisastudent-runorganization.Itisopeneverydaythroughoutthesemester.Itincludesbothstudentsandprofessionalathletes.Itoperatesequipmentfor10events.WhatdoweknowaboutthePurdueTriathlonClub?Itaimstopopularizethreesports.Itallowsathletestotraininmultiplesports.Itdividesmembersbasedonskilllevel.IthostsracesannuallyinApril.Whichclubishighlycompetitiveonanationallevel?ThePurdueTriathlonClub.ThePurdueGymnasticsClub.ThePurdueMen'sClubVolleyball.ThePurdueUniversityBaseballClub.完形填空：閱讀下面的短文，從短文后各題所給的A、B、C和D四個(gè)選項(xiàng)中，選岀可以填入空白處的最佳選項(xiàng)。Asateenager,Ihatedsportsandphysicaleducationclasses.Iwasalwaysmakingup1togetoutofthem.However,whenIstarteduniversity,Idecidedto2kungfu.Tomy3,Ilovedit!Itwasafriendlyandcasualclub.Iusedtogotwoorthreetimesaweekto4.Becauseitisnotateamsport,Ididn'tfeel5aboutnotbeingverygood.Andbecauseitisacombatsport,youtraininpairs,whichmeansthatyougetto_6peopleandtalktothem.Ialso7thatthefocusoftheclasseswasongettingbetteratkungfu,8exercisingtochangemybody.Ithinkthatadvertisingputsusunderanunhealthypressuretochangeour9.WhenIwasdoingkungfu,mybodydidchange—Igot10andquicker—butthe11wereasideeffectofthesport,insteadofthegoal.12,inthelastyearofuniversityIwastoobusytodokungfumostofthetime.WhenImovedtoItalythisyearIwantedtostartdoinga13sportagain.Ifoundagreatlocal14thatdoesmixedmartialarts.Theclubismore15thantheoneatmyuniversityandwedolotsofsparring(practicefights).Ithinkthatsparringislikechess,butmuchfasterandmuchmorefun!Ifyoursparringpartnertriesto16you,youhavetodecideinaninstanthowto17.Youcoulddodge,blockoreven18theirarmandthenthrowthemtothemat.WhenIwasateenager,1never19thatIwouldlikesports.NowIthinkthateveryoneshouldtryasmany20aspossiblebecauseIbelievethereissomethingoutthereforeveryone!A.purposesB.suggestionsC.excusesD.chancesA.playB.tryC.promoteD.teachA.amusementB.reliefC.disappointmentD.surpriseA.exerciseB.trainC.competeD.relaxA.guiltyB.uncertainC.strangeD.aloneA.observeB.challengeC.meetD.hugA.dislikedB.acceptedC.realizedD.appreciatedA.ratherthanB.inspiteofC.inparticularD.otherthanA.attitudeB.appearanceC.impressionD.behaviorA.smallerB.youngerC.strongerD.heavierA.attemptsB.problemsC.effortsD.changesA.UnfortunatelyB.EventuallyC.ThankfullyD.NaturallyA.teamB.strengthC.combatD.targetA.stadiumB.gymC.clubD.schoolA.convenientB.availableC.expensiveD.seriousA.trickB.punchC.angerD.chaseA.surviveB.escapeC.replyD.reactA.catchB.leadC.pushD.findA.admittedB.deniedC.imaginedD.decidedA.lifestylesB.sportsC.projectsD.hobbies語法填空：Facebooktohire10,000intheEUtobuild“metaverse①（元宇宙）”FacebookIncplanstocreate10,000jobsintheEuropeanUnionoverthenextfiveyearstohelpbuildtheso-calledmetaverse—anonlineworld1peoplecanusedifferentdevicestomoveand2（communication）inavirtualenvironment.3（invest）intheEUofferedmanyadvantages,4（include）accesstoalargeconsumermarket,first-classuniversitiesandhigh-qualitytalent,Facebooksaid.ChiefExecutiveMarkZuckerberg5（talk）up②metaversesinceJulyandthebuzzy③word,first6（coin）④inadystopian⑤novelthreedecadesearlier,7（reference）byothertechfirmssuchasMicrosoft.Usingtechnologiessuchasvirtualandaugmentedreality,Facebookplanstocreatea8（great）senseof“virtualpresence”,