湖南省邵东县第三中学高三第三次测评新高考英语试卷及答案解析

湖南省邵东县第三中学高三第三次测评新高考英语试卷注意事项：1．答卷前，考生务必将自己的姓名、准考证号填写在答题卡上。2．回答选择题时，选出每小题答案后，用铅笔把答题卡上对应题目的答案标号涂黑，如需改动，用橡皮擦干净后，再选涂其它答案标号。回答非选择题时，将答案写在答题卡上，写在本试卷上无效。3．考试结束后，将本试卷和答题卡一并交回。第一部分（共20小题，每小题1.5分，满分30分）1．Lifeisajourney_____withhardships,joysandspecialmoments.A．filled B．tofill C．filling D．havingfilled2．TheexchangestudentfromKenyaoftenshareswithusthenewsofhiscountryand____ofhisneighbouringcountries.A．those B．that C．it D．theone3．Ifpeoplekeeppollutingtheocean,nocreaturetherewillsurvive______.A．atallcost B．foralongwhileC．inthelongrun D．bynomeans4．Itwasintheremotemountainareas______Ispentthegapyear______Ilearnedhowtoworkwithagroupofstrangersandhowtolookaftermyself.A．where;that B．when;thatC．where;when D．that;where5．Theyoungmanwhowasexpectedto________hisfather’scompany,madeanunusualdecisionthathewouldstarthisownbusiness.A．handover B．thinkoverC．goover D．takeover6．－I_______inthesamepositiontoolong.Mylegshavefallenasleep.－Shakeitalittlebeforeyougetup.A．willsit B．havesatC．amsitting D．havebeenstting7．---Ihavebeenworkingformorethan30years!I’mgoingtoretirenextmonth.---Really?Youdon’tlookaday40!A．overB．byC．withD．for8．Maybehereallyshoulddomoreexercisesfromnowon.____,Ihopehecouldgetoversoon.A．Somehow B．Somewhat C．Anyway D．Anywhere9．After_______hadhappenedhecouldnotcontinuetoworkthere.A．which B．howC．what D．having10．Whencaught_____intheexam,hebeggedfortheteacher’spardonandtried______punishment.A．cheating;escapingB．tobecheating;toescapeC．cheating;toescapeD．tobecheating;escaping11．Franklyspeaking,IamnotsurewhetherI________thisintheolddayswiththatkindofequipment,whichlooksquiteoddandridiculous.A．shouldhavedone B．needhavedone C．wouldhavedone D．musthavedone12．Thanksforyourusefuladvice;otherwiseI______suchrapidprogress.A．didn’tmake B．couldn’thavemadeC．hadn’tmade D．shouldn’thavemade13．Whilewewerelisteningtothespeechattentively,avoice_____toannouncetheresultoftheelection.A．brokein B．brokeup C．brokeoff D．brokedown14．Accordingtothelocallaw,noone______enterthebuildingsitewithoutpermission.A．canB．mustC．shallD．dare15．Thewarmthof____coatwillmostlybedeterminedby____softofclothused.A．the;a B．a;the C．/;the D．a;a16．WithMother'sDayaroundthecorner，Ihavetakensomemoneyoutofthebank_____________presentsformymother.A．buy B．tobuyC．buying D．havingbought17．Don’ttakeitseriously，Alice．Iwasn’tmaking_____funofyou—it’snothingbut_____joke．A．/;the B．the;theC．the;a D．/;a18．Lisawouldn’t________thejobanymore.Shehadabigargumentwithherbossandresigned.A．comeupwith B．keepupwithC．makeupwith D．putupwith19．Youthisaperiodofourlifeweseenolimittoourhopesandwishes.A．where B．thatC．what D．when20．Thedrivercouldhavesurvivedbuthetheseatbelt.A．hadbeenwearing B．hadn'tworn C．wasn’twearing D．didn'twear第二部分阅读理解（满分40分）阅读下列短文，从每题所给的A、B、C、D四个选项中，选出最佳选项。21．（6分）TheEastRoomoftheWhiteHousewasburstingwithcoloronJuly14,as56youngcooksarrivedfortheKids’StaleDinner.Thechefs,agedfrom8to12,werewinnersoftheHealthyLunchtimeChallenge,aprogramthatencourageskidstocreatehealthy,affordable,original,andtastylunchrecipes.FormerFirstLadyMichelleObamahostedtheevent,nowinitsfifthyearandpartofherLet’sMove!Morethan1,200kidsthroughoutAmericaenteredthechallenge,wereencouragedtobecreativeanduseingredients(原料)grownintheirhomestates,orcommunities.Recipeshadtorepresenteachofthefoodgroupsbyincludingfruits,vegetables,wholegrains,leanprotein,andlow-fatdairy.The56winnersweretreatedtoamealfeaturingsomeoftheirowncreations.“Thiseventisn’tjustabouteatingwelltoday,butaboutsettingkidslikeallofyouupforalifetimeofhealthychoices.”theformerfirstladytoldtheyoungcooks.“Assmallyouare,youcanchangelives.Iseetheworkofkids,themagicyoualldo.Peoplechangebecauseofkids.”AmelieChen’swinningrecipewasBreadfruit,Taro,andGarlicChickenTrio.The9-year-oldfromAmericanSamoasaidshewas“veryexcited”tobeattendingtheevent.“WinningthistriptotheWhiteHousemakesmethinkofmyfavoritequotefromWaltDisney:‘Ifyoucandreamit,youcandoit,’”shesaid.FamouscooksRachaelsRayandTanyaSteel,editorialdirectorofCleanPlatesOmnimedia,amediacompanyfocusingonhealthandwellnessfoodculture,werealsoinattendance.MichellerecognizedthemasdrivingforcesinmakingtheKids’StateDinnerarealityseveralyearsago.RayandSteelposedforpictureswiththeyoungcooks.Followingthemeal,thecrowdwastreatedtoperformancesbythecastofWaltDisneyWorldResort’sTheJungleBook.The56winnersendedtheirvisitwithatouroftheWhiteHouseKitchenGarden.1、InMichelleObama’sLet’sMove,kids.A．cancookcreativelyB．mustworkingroupsC．shouldliveanactivelifeD．mustcookwithgivenmaterials2、WhatdoesMichelleObamaexpectkidstodoaftertheevent?A．Leadahealthylife.B．Createmorerecipes.C．Growcropsthemselves.D．Eatwhattheyhavecooked.3、WhydidRayandSteelattendtheevent?A．Theycametoawardtheyoungcooks.B．Theycaredaboutkids’development.C．Theywereinvitedtoreporttheevent.D．Theywantedtolearnthefoodculture.22．（8分）Americanfamiliesareaccustomedtosettlinginfarawayplaces,whichhasbeenanationalphenomenon.Decadesofdata,includingamorerecentGallupstudy,characterizestheUSasoneofthemostgeographicallymobilecountriesintheworld.“AboutoneinfourUSadults(24percent)hasreportedmovingwithinthecountryinthepastfiveyears.”thereportednoted.WiththeexceptionofFinns(23percent)andNorwegians(22percent),AmericansmoveconsiderablymorethantheirEuropeanpeers.Thoughsomemaymoveforloveorfamily,themajorreasonwhyAmericanschoosetomovearoundis,unsurprisingly,relatedtowork.CitingdatafromtheCurrentPopulationSurvey,apostontheblogoftheNewYorkFednotedthatbetween58and2013,“slightlymorethanhalfofinterstate(州际的)migrantssaidtheymovedforemployment­relatedreasons—acategorythatincludesmovesundertakenfornewjobs,jobtransfers,andeasiercommutes(通勤).”Theseekingofopportunity,particularlyforanimmigrantnation,isanationalmythology(神话)aswellasanemotionalattachmenttowork.AnewworkingpaperanalyzedbyBenStevermanatBloombergsuggeststhatworkersintheUSnow“putinalmost25percentmorehoursthanEuropeans”inagivenyear.Thisfigurehassteadilyrisensincethe30s,whenthehoursloggedbyworkersinWesternEuropeandtheUSwereroughlythesame.Thereare,ofcourse,someinternalfactors.TheUSismuchvasterthanmostEuropeancountries,plusitboasts(拥有)acommonlanguage.ItisconsideredtobeasignofanefficientlabormarketthatUSworkerscanbepersuadedtomovetoregionswherethereisasteadygrowthinjobs,suchastheSunBeltinrecentyears.AndwhileAmericanworkersoftenhavefewerlaborprotectionsthantheirEuropeancounterparts,asareportbytheWorldBanknotedin2012,American“laborlawsgiveemployersthepowertofire,hire,orrelocate(重新安置)workersaccordingtotheirneeds”，aflexibilitythatisthoughttoaideconomicgrowth.TheWorldBandreportaddedthattheoccupationoftheaverageUSemployeein66was4years,comparedto10yearsintheEuropeanUnion.Nevertheless,whileAmericansremainexcessivelymobile,FaithKarahanandDariousLiattheNewYorkFedarethelatesttonotethatUSworkersaremovingaroundlessthanbefore.Duringthe40s,3percentofworking­ageAmericansrelocatedtoadifferentstateeachyear;thatfigurehadbeencutinhalfby2010.“WhilepartofthedeclinecanbeattributedtotheGreatRecession，”theauthorssuggest,“this__phenomenontookplaceoverthecourseofseveraldecadesandisnotnecessarilyrelatedtotheeconomicconditions.”Sowhataccountsforthisphenomenon?Around­upoftheoriesbyBradPlumeratTheWashingtonPostincludedtheagingoftheUSworkforce,thefurtherriseoftwo­incomehouseholds,theburdensofrealestate,evolvingworkplaceculture,aswellastheflatlineofwages,whichmakesmovingawayforajob,onaverage,alessrewardingfinancialproposition.KarahanandLiputmuchstockintheeffectsofanagingworkforce,towhichtheyattributeatleasthalfofthedeclineininterstatemigration.“Inshort,ayoungindividualtodayismovinglessthanayoungpersondidinthe40sbecauseofthehigherpresenceofolderworkers，”theywrite,suggestingthatemployershaveshiftedtheiremploymenttactics(策略)toadapttothechangingdemographics(人口统计数据)oftheworkforce.Needlesstosay,moviesaboutthiserainAmericanlife,inwhichfewerpeoplesetouttostartlivesinwide­rangingplaces,willprobablybemuchlessexciting.1、Accordingtothepassage,inthepastfiveyears,Americanshavemoved________.A．relativelylessthantheBritish B．lessfrequentlythanItaliansC．slightlymorethanNorwegians D．considerablymorethanFinns2、WhatcanweinferfromParagraphs2and3?A．Americanschoosetomovemainlyforworkandfamily.B．Americanshaveaverystronginterestinwork.C．AmericansinvestedmoretimeinworkthanEuropeansin35.D．AmericanstendedtomovetoEuropebetween58and2013.3、WhichofthefollowingisNOTthereasonwhyAmericanworkersmovemorethantheirEuropeanpeers?A．ThereisacommonlanguageintheUS.B．TheUSismuchvasterthanmostEuropeancountries.C．Americanlaborlawsgiveemployersmorefreedomtodealwiththem.D．Theyareofferedmoreefficientlaborprotections.4、Theunderlinedpart“thisphenomenon”inParagraph5refersto________.A．theGreatRecessionB．thedeclineofworking­ageAmericans'interstatemigrationC．thereductioninthenumberofworking­ageAmericansD．Americans'tendencytoremainmobile5、HowdoAmericanemployersdealwiththeagingworkforceaccordingtothepassage?A．Bystickingtotheirpreviouspolicies. B．Byadjustingtoit.C．Byimprovingtheiremployees'jobskills. D．Byraisingemploymentstandard.6、AstothecurrentsituationofAmericansmigration,theauthormightfeel________.A．curious B．strange C．confused D．disappointed23．（8分）Myreasonforstartingourfamilytraditionofreadinginthecarwaspurelyselfish:IcouldnotbearlisteningtoASesameStreetChristmasforanother10hours.Mythreechildrenhadbeenaddictedtothiscassette（磁带）onourprevioussummerroadtrips.AsIbegantoprepareforournext500-milecartrip,Icameacrossabook—JimTrelease’s—TheReadAloudHandbook.Thiscouldbetheanswertomyproblem.Ithought.SoIputRoaldDahl’sJamesandtheGiantPeachintomybag.WhenIbegantoreadaloudthetaleoftheboywhoescapesthebadguysbyhidinginsideagiantpeach,mythreekidsarguedandfoughtwitheachotherintheirseats.Butafterseverallines,theywereattractedintotherhythmofthewordsandbegantolisten.Wesoonlearnedthatthesimplepleasureoflisteningtoawell-writtenbookmakesthelongmilespasmorequickly.Sometimesreadingbecamethemostinterestingpartofthetrip.IreadWilsonRawls’sSummeroftheMonkeysaswespenttwodaysdrivingtothebeach.Wearrivedjustbehindthepowercrewsrestoring（恢复）electricityafteratropicalstorm.Theraincontinuedmostoftheweek,andthebeachwascoveredwithoilwashedupbythestorm.Whenwereturnedhome,Iaskedmysonwhathelikedaboutthetrip.Heansweredwithouthesitation“Thebookyoureadinthecar.”Roadtripsstillofferchallenges,eventhoughmychildrennowareteenagers.Butwecontinuetoreadaswerollacrossthecountry.AndI’mbeginningtoseetatreadingaloudhasdonemorethanhelppassthetime.Foratleastalittlewhile,wearenotshutinourownelectronicworlds.Andmaybewe'vestartedsomethingthatwillpassontothenextgeneration.1、Whydidtheauthorstartreadinginthecar?A．Shewantedtohaveabetterjourney.B．ShewantedtokeepafamilytraditionC．Herchildrenwereaddictedtoreading.D．Herchildrenweretiredofthecassette.2、Howdidthechildrenreactaftertheauthorreadafewlines?A．Theykeptfighting.B．Theyhidthemselves.C．Theysoonsettleddown.D．Theyreadtogetheraloud.3、Whatcanwelearnabouttheauthorandherfamily’striptothebeach?A．Theywerecaughtinastorm.B．Theyenjoyedreadingontheroad.C．Theyhadagoodtimeonthebeach.D．Theyfoundreadingboring.4、Whichcanbethebesttitleforthetext?A．BetterTravelingthanReadingB．BooksthatChangedMyChildrenC．RoadTripsFullofChallengesD．ReadingMakesGreatRoadTrips24．（8分）Microsofthasdevelopedanewsmartphoneappthatinterpretseyesignalsandtranslatesthemintoletters,allowingpeoplewithmotorneuronediseasetocommunicatewithothersfromaphone.TheGazeSpeakappcombinesasmartphone’scamerawithartificialintelligencetorecognizeeyemovementsinrealtimeandconvertthemintoletters,wordsandsentences.ForpeoplesufferingfromALS（渐冻症）,alsoknownasmotorneuronedisease,eyemovementcanbetheonlywaytheyareabletocommunicate.“Currenteye-trackinginputsystemsforpeoplewithALSorothermotorimpairmentsareexpensive,notrobustundersunlight,andrequirefrequentre-calibrationandconsiderable,relativelyimmobilesetups,”saidXiaoyiZhang,aresearcheratMicrosoftwhodevelopedthetechnology.“Tomitigatethedrawbacks…wecreatedGazeSpeak,aneye-gesturecommunicationsystemthatrunsonasmartphone,andisdesignedtobelow-cost,robust,portableandeasytolearn.”Theappisusedbythelistenerbypointingtheirsmartphoneatthespeaker.Achartthatcanbestucktothebackofthesmartphoneisthenusedbythespeakertodeterminewhicheyemovementstomakeinordertocommunicate.Thestickershowsfourgridsofletters,whicheachcorrespondtoadifferenteyemovement.Bylookingup,down,leftorright,thespeakerselectswhichgridstheletterstheywantbelongto.Theartificialintelligencealgorithmisthenabletopredictthewordorsentencetheyaretryingtosay.Zhang’sresearch,Smartphone-BasedGazeGestureCommunicationforPeoplewithMotorDisabilities,issettobepresentedattheConferenceonHumanFactorsinComputingSystemsinMay.1、Theunderlinedword“mitigate”inparagraphprobablymeans__________________.A．adjustB．correctC．strengthenD．lessen2、Wecanlearnfromthepassagethat_________________________.A．thepresenteye-trackinginputsystemscanhardlymeetthedemandofALSsuffersB．ALSsufferscanonlybeunderstoodthroughthenewly-developedappC．speakerscanmakedifferenteyemovementstochoosepreferablewordorsentenceD．theGazeSpeakappisgoingtobereleasedattheConferenceonHumanFactorsinMay3、Whichisthebesttitleforthetext?A．MicrosoftfindshopeforpatientswithALSB．MotorneuronediseasemightbecuredbyasmartphoneappC．AsmartphoneapphelpsALSsuffersspeakwiththeireyesD．ALSsuffersfinallyfindawaytocommunicate25．（10分）Weshouldallletthesunshineinasmuchaspossible--notjustbecauseitmakesusfeelgood.ExposuretosunlightproducesvitaminDinourskin.ThisiswhywecallvitaminDthe“sunshinevitamin.”VitaminDisgoodforeverybody.Infact,researchshowsthis"sunshinevitamin"couldhelpwomenwithbreastcancerlivelonger.BreastcancerpatientswhohavehighbloodlevelsofvitaminDhaveabetterprognosis(/a)thanwomenwhodon't.Aprognosisishowquicklyadoctorexpectsapatienttorecoverorhowlongadoctorexpectsapatienttolive.Researchersfoundthatthesewomenhadlessaggressivecancers.Theywerealso30percentlesslikelytodiefromthecancerortogetitagain.ResearcherSongYaoledthestudyfortheRoswellParkCancerInstitute.HesaidthestudyshowedthathighvitaminDlevelsimprovedthepatients'prognosisnomatterwhattypeorhowadvancedtheircancerwasBesidesfightingbreastcancer,vitaminDhelpsthebodyinotherways.Mostimportantly,vitaminDcontrolshowthebodyabsorbscalcium.Italsomakessurethebody'simmunesystemworksnormally.SeveralstudiesshowthatvitaminDalsostrengthenstheimmunesystemandhelpsthebodyfightdiseaseVitaminDmayhelpreduceyourriskofdevelopingheartdisease,accordingtoa2008studypublishedinthejournalCirculation.Anditmayalsohelpprotectyouagainstgettingtheflu.OtherstudieshaveshownthatvitaminDmighthelppeoplesufferingfromdepression.Factorsintheenvironmentmaylimitourexposuretosunlightand,therefore,vitaminD．Thesefactorsincludepollution,usingtoomuchsunscreen,spendingtoomuchtimeinsideandlivinginareaswithlittlesunlight.Soifyoucan'tgetenoughsunshine,eatfoodsthatarerichinvitaminD:eggyolks,cheeseandfattyfishhassalmon,sardines,tunaormackerelHowmuchvitaminDyouneedisamuch-debatedtopic.ThebestwaytoknowifyouneedmorevitaminDistogettestedbyadoctor.1、Accordingtotheresearch,womenwithhighbloodlevelsofvitaminD______.A．livelongerthanwomenwithoutB．nevergetcanceragainC．havelessaggressivecancersD．canrecoverfromcancerearlier2、ThebenefitsofvitaminDare_______.a.strengtheningtheimmunesystem

b.killingcancercellsc.promotingtheabsorptionofcalcium

d.protectingagainstgettingthefluA．abc.B．acdC．abd.D．abcd.3、TogetmorevitaminD,peoplecan__________.A．eatmorefoodanddomoreexerciseB．getexposuretomoresunlightandeatfoodsrichinitC．drinkmorewaterandeatmorefoodsrichinitD．eatmorefoodandkeeppositive4、Howdoestheauthorsupportthethemeofthepassage?A．ByprovidingresearchresultsB．BystatingargumentsC．Byexplainingstatisticaldata.D．Bygivingexamples.第三部分语言知识运用（共两节）第一节（每小题1.5分，满分30分）阅读下面短文，从短文后各题所给的A、B、C和D四个选项中，选出可以填入空白处的最佳选项．26．（30分）Ihadbeenplayinghockey（冰球）forabout10years.Iwasalwaystheonesittingattheendofthebench,and1gotintoagame.Iwenttoallthe2andshowedupevenwhenitwasso3thatyour‘breathfroze’andwhentheotherplayershaddecidedtostayhome.IfeltIhad4enoughandthoughtofquitting.Ifinallydecidedto5thenewstomymomthatIwasleavingtheteam.Mymommayhavelookedlikeatinyandquietladybuton6mywords,shesaid,“Remember,‘Aquitterneverwinsandawinnerneverquits.’Yourmotherdidn’traise7,sothinkaboutyourselfina8wayandseeyourselfasawinner!”SoIworkedharderthaneveratgettinginbettershape,9myshot（投球）accuracyandchangingmy10.Onceinamatch,we11ourfirstgamebadly.What’sworse,oneofourbestplayersgothurt.Iwassittingatmy12place,attheendofthebench,whenthecoachcameoverandtoldmeIwasgoing13.Iwasnervous,excitedandterrifiedallatthesametime.TheopposingteamwasfastandIhadtoadmitIwasalittle14.Butmymom’swords15outinmyheadlikeachurchbell.Insteadofbeingafraid,Iwas“pumped”andIveryquicklyfoundthatallmy16workwaspayingoff.Iwasasfastaskaterasanyoneelseontheice,andIseemedtogetthe17toscore.Thecrowdwentquiet.AllthetimeIspentontheicewheneveryonehadgonehomehad18meforthismoment.Won!Iwon!ThelessonIlearnedfrommymom’s19hasstayedwithmeovertheyears.IhearthemwheneverIamfacedwithachallenge,orwheneverI20myself.1、A．once B．seldom C．usually D．evenB2、A．meetings B．shows C．matches D．practices3、A．cloudy B．wet C．cold D．windy4、A．suffered B．explained C．planned D．escaped5、A．write B．break C．read D．speak6、A．noticing B．gathering C．hearing D．analyzing7、A．talkers B．dreamers C．attackers D．losers8、A．positive B．familiar C．brief D．convenient9、A．testing B．improving C．questioning D．affecting10、A．aim B．taste C．habit D．attitude11、A．lost B．controlled C．practiced D．continued12、A．usual B．safe C．secret D．private13、A．off B．in C．by D．up14、A．annoyed B．awkward C．scared D．bitter15、A．put B．rang C．gave D．stood16、A．exact B．extra C．creative D．casual17、A．chance B．message C．order D．note18、A．spared B．requested C．prepared D．sent19、A．actions B．reasons C．words D．promises20、A．judge B．express C．comfort D．doubt第二节（每小题1.5分，满分15分）阅读下面材料，在空白处填入1个适当的单词或括号内单词的正确形式。27．（15分）Asisknowntoall,the1．(tradition)Chineselunarcalendardividestheyearinto24solar2．(term).MajorSnowisthe21stsolartermoftheyear.ThesnowinNorthChinamaylastawholeday,blockingtheroad.Aboutthesnow,aproverb3．(go),“Atimelysnowpromisesagoodharvest”.Thetemperaturedrops4．(sharp).Asthesnowcoverstheground,pests5．(live)throughthewinterwillbekilledbythelowtemperature.Duringthisperiod,6．(prevent)respiratory(呼吸的)illness,thepeopleshouldwearwarmclothes.Wintersweet,7．originatedinChina,usuallycomesoutinmid-to-lateDecemberinsomesoutherncitiesofChina.Withpineandbamboo,it8．(refer)toasoneoftheThreeFriendsofWinter.DuringMajorSnow,ChinesepeopleinSouthChinasuchasinNanjing,Hangzhou,Hefei,Chongqingmakesausages,9．importantpartofpreparationfortheSpringFestival.Thesausageshould10．(dry)inan(通风的)placeintheshade,Afteraweek,cutacertainamountoff,andboilorfryitasyoulike.第四部分写作（共两节）第一节短文改错（满分10分）28．（10分）假定英语课上老师要求同桌之间交换修改作文，请你修改你同桌写的以下作文。文中共有10处错误，每句中最多有两处。错误涉及一个单词的增加、删除或修改。增加：在缺词处加一个漏词符号（^），并在此符号下面写出该加的词。删除：把多余的词用斜线（＼）划掉。修改：在错的词下划一横线，并在该词下面写出修改后的词。注意：1、每处错误及其修改均仅限一词；2、只允许修改10处，多者（从第11处起）不计分。DearKatherine,HowexcitingIamtohearyouarecomingtovisitmethenextFriday．Fortunately,Iwon'tbeabletomeetyouattheairportalthoughIhaveclassesintheafternoon．Youwon'tfinddifficulttogettothecitycenter．Theairportbusleftevery30minuteandwilltakeyourighttotheInternationalHotel．MyclasswillbeoverbythenorIwillpickyouupthere．Iwilltakeyoutoahot-potrestaurantfordinnerandwe'11talkwithourplanfortheweekendoverdinner．HavingapleasanttripandseeyouonFriday．Sincerelyyo