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海量资源尽在星星文库：[来源:Z_xx_k.Com]Writingaboutbeliefsishard.Itmakesyoureachdeepintoyoursoulandtrulylookatwhatisthere.Itrequirestimeandeffort,andthenhitsyouinthefaceandsomeoneinthebackgroundsays“Oh,whydidn’tyouthinkofthatbefore?”Beliefschange,theymatureandgrowjust(21)__________achild.Thebestbeliefsaretheonesthat(22)________(cherish)throughoutalifetime.OnebeliefIcherishaboveallothersisthepowerandenjoymentofreading.Readingcanbeforfunandthatlearningis(23)_________(easy)whenyou’rehavingfun.Beingabletorelatetothecharacters,imaginetheconflictsinyourhead,andfeelthecharacters’sadness,aswellastheirjoy,isthemostamazingthingaboutreading.Achancetoliveanotherlifeforashorttime,tobeanotherperson,Readinglendsthesoulandmindaplace(24)_________(escape).Iwouldmuchratherpickupagoodluckthanwatchatelevisionshow.Readingcanteachus.Whetherit’safantasynovelorahistoricalaccount,youlearnwhenyouread.Itprovidesgrammarand(25)_______(write)languageskills.Readingteachesusaboutemotion.Readinggivesyounewwordsandexpandsyourvocabularybyforcingyoutochallengeyourself.Initsownwayitmakesusfeeltheemotionsofthecharacters.(26)_________________________youread,Ibelieveyouwilllearn,mindandsoul.Readingcanbringpeopletogether.Icannotcountthenumberofnewfriendsandpeoplethathaveenteredmylifebecauseofbooks.Mystepmother,grandmother,andIallradthesamebooks.(27)________isbetterthanbeingabletosharethetensemoments,nearmisses,andhappyendingswhile(28)________(drink)asteamingcupofcoffeetogetherwithsomeone.Readingallowsyoutoloweryourwallsandletpeopleintoformgenuinechains.Pluspeople(29)________readimpressivebooksareusuallyprettycoolthemselves!海量资源尽在星星文库：(30)________(help)methroughdifficultperiodsandapplaudedmeintimesofcelebration.Booksalwaysmakemesmile.That’sthebiggestreasonIbelieveinreading,becauseitwillmakeyouhappy.SectionBDirections:Afterreadingthepassagebelow,fillineachblankwithaproperwordgiveninthebox.Eachwordcanbeusedonlyonce.Notethatthereisonemorewordthanyouneed.A.extentB.substanceC.normalD.potentialE.refreshingF.instructionsG.functionH.causedI.physicalJ.restoreK.mentallyThediscoverybuildsonearlierfindingsshowedthataclassofgenescalledsplicing(胶接)factorsisprogressivelyswitchedoffasweage.Theresearchteamfoundthatsplicingfactorscanbeswitchedbackonwithchemicals,makingagingcellsnotonlylook____31____younger,butstarttodividelikeyoungcells.Theresearchersappliedcompoundschemicalsbasedona____32____naturallyfoundinredwine,darkchocolate,redgrapesandblueberries,tocellsinculture.Thechemicals____33____splicingfactors,whichareprogressivelyswitchedoffasweagetobeswitchedbackon.Withinhours,thecellslookedyoungerandstartedtorejuvenate,behavinglikeyoungcells.Thediscoveryhasthe___34_____toleadtotherapiesthatcouldhelppeopleagebetter,withoutexperiencingsomeofthedegenerativeeffectsofgettingold.Mostpeoplebytheageof85haveexperiencedsomekindofchronicillness,andaspeoplegetoldertheyaremorepronetostroke,heartdiseaseandcancer.海量资源尽在星星文库：“Thisisafirststepintryingtomakepeoplelive___35_____lifetime,butwithhealthfortheirentirelife.Ourdatasuggeststhatusingchemicalstoswitchbackonthemajorclassofgenesthatareswitchedoffasweagemightprovideameansto____36____tooldcells.”DrEvaLatorre,ResearchAssociateattheUniversityofExeter,whocarriedouttheexperiments,wassurprisedbythe____37____andrapidityofthechangesinthecells.“WhenIsawsomeofthecellsintheculturedish___38_____Icouldn’tbelieveit.Theseoldcellswerelookinglikeyoungcells.Itwaslikemagic,”shesaid.“Irepeatedtheexperimentsseveraltimesandineachcasethecellsrejuvenated.Iamveryexcitedbytheimplicationsandpotentialforthisresearch.”Asweage,ourtissuesaccumulatesenescentcellswhicharealivebutdonotgrowor____39____astheyshould.Theseoldcellslosetheabilitytocorrectlyregulatetheoutputoftheirgenes.Thisisonereasonwhytissuesandorgansbecomesusceptibletodiseaseasweage.Whenactivated,genesmakeamessagethatgivesthe____40____forthecelltobehaveinacertainway.Mostgenescanmakemorethanonemessage,whichdetermineshowthecellacts.Splicingfactorsarecrucialinensuringthatgenescanperformtheirfullrangeoffunctions.III.ReadingComprehensionSectionADirections:ForeachblankinthefollowingpassagetherearefourwordsorphrasesmarkedA,B,CandD.Fillineachblankwiththewordorphrasethatbestfitsthecontext.海量资源尽在星星文库：“executivecontrol”whenitcomestomakingdecisions,_____41___consideringtheirgoalsandwaystosatisfythosegoalsbeforeacting.Heacknowledgesthatlanguageis____42___forsomeexperiencedformsofhigher-orderthinking,orthinkingaboutthinking.Butsupportedbyareviewofpreviouslypublishedresearch,Buckner_____43____thatawidevarietyofanimals---elephants,chimpanzees(黑猩猩),ravens(大乌鸦)andlions,amongothers---______44____reasonabledecisi