云南省建水縣四校2025屆高三下學期第五次調(diào)研考試英語試題含解析

云南省建水縣四校2025屆高三下學期第五次調(diào)研考試英語試題考生請注意：1．答題前請將考場、試室號、座位號、考生號、姓名寫在試卷密封線內(nèi)，不得在試卷上作任何標記。2．第一部分選擇題每小題選出答案后，需將答案寫在試卷指定的括號內(nèi)，第二部分非選擇題答案寫在試卷題目指定的位置上。3．考生必須保證答題卡的整潔?？荚嚱Y(jié)束后，請將本試卷和答題卡一并交回。第一部分（共20小題，每小題1.5分，滿分30分）1．____________thefiercecompetitioninjobseeking,manyuniversitygraduateshavenochoicebuttoreducetheirowndemandforthesalary.A．FacedB．FacingC．TofaceD．Havingfaced2．Itwasinthatsmallhouse________wasbuiltwithstonesbyhisfather________hespenthischildhood.A．that;where B．which;thatC．which;which D．that;which3．ThecoatIboughtyesterdayisnotexpensiveatall.Asamatteroffact,Iwouldgladlyhavepaid______forit.A．a(chǎn)smuchtwice B．muchastwiceC．a(chǎn)stwicemuch D．twiceasmuch4．Idon’tthinkRosemarywillbeupsetaboutit,butI’llgotoseeherincaseshe_______.A．is B．willbe C．does D．need5．—Howlongdoyouthinkitwillbe________theStockMarketreturnstonormal?—Atleastoneyear,Iguess.A．when B．before C．until D．that6．---Howwasyourevening?---WewenttoJoe’sandhad____.Wereallyenjoyedourselves.A．a(chǎn)whiteelephant B．a(chǎn)squaremeal C．a(chǎn)sacredcow D．thesaltoftheearth7．Mr.Chapmanretiredat70afterhenearly40yearswiththeGasCompany．A．hadspent B．hasspent C．spends D．wouldspend8．—Mum,littleRaybrokehistoysagain!—Itdoesn'tmatter.Yousee,accidents_____happen.A．shall B．should C．must D．will9．Thestudentshavedecidedonafinaldatebywhicheveryone________readingthebooksassignedbytheirprofessor.A．finishes B．finishedC．havefinished D．willhavefinished10．Therehasbeenpositivereactiontotheproposaltohelpthedisabled,theimpactwillbelastingespeciallyforyoungerones.A．onwhich B．onwhomC．ofwhich D．ofwhom11．—Whyareyouinsuchahurry,Bob?—MothertoldmeI________behomeby9:00pm,orshewillbeworried.A．mustB．mightC．canD．may12．Iwouldappreciateyoucouldcometomybirthdayparty.A．that B．thatit C．if D．itif13．Undergoodtreatment,manypatientsarebeginningto________andwillsoonrecover.A．turnupB．catchupC．pickupD．showup14．Irefusetoaccepttheblameforsomething________wassomeoneelse'sfault.A．who B．thatC．a(chǎn)s D．what15．---Let'swalktothatvillagetogether.---__________.Howcanwetwogirlsdothatinthedark？A．Iagreewithyou. B．That'sagoodpoint.C．Youmustbejoking！ D．That'snotyouropinion！16．—Guesswhat!Icameacrossanoldfriendatthestationlastweekend.—I’msureyoutalkedwithhimhappily.A．Soundsgood! B．Verywell.C．Hownice! D．Allright.17．The2011AustralianOpenwassuccessfullyheldincityofMelbourne,bigcityinAustralia.A．a(chǎn);a B．the;a C．a(chǎn);the D．the;the18．Menmustconsidereating,drinking,clothingandfindingshelter_____theycanpursueentertainmentandrecreation.A．untilB．unlessC．beforeD．because19．TomlookedatJenny,withtears_______hiseyes,andshoutedoutthewords_______inhisheartforyears.A．filling;havingbeenhiddenB．filled;hiddenC．filling;hiddenD．filled;hiding20．---Nowadays,buyersaccustomedtopricesmovingupwardjustadoptawait-and-seeattitude.---Iftheycontinueto_____,thenourcompanyisclosingdown.A．fishintheair B．sitonthefenceC．flyoffthehandle D．beataroundthebush第二部分閱讀理解（滿分40分）閱讀下列短文，從每題所給的A、B、C、D四個選項中，選出最佳選項。21．（6分）Criminalswhotrytopassofffakeartastherealdealshouldbecarefulnow.Anewidentificationmethodcouldmakerecognizingfakesmucheasier.ThetechniqueallowsscientiststotagpaintingsandotherartworkswithtinypiecesofDNA,whichactlikeasignature.Ifanartworkmissedthetag,peoplewouldimmediatelyknowitwasanillegalcopy.DNAisnormallyfoundinsidethecellsofalllivingthings.However,researchersattheStateUniversityofNewYorkatAlbany,whodevelopedthetaggingtechnique,havecreatedDNAinalab,whosecodeisjustasuniqueasthatofDNAfoundinnature.ThescientistswouldapplytheengineeredDNAtoasmalltagandplaceitonanartwork.Overtime,theDNAinthetagwouldbondwiththeartatamolecular(分子的)level.Thatway,evenifthetagisremoved,theDNAremains.PossiblebuyersandsellerscanuseascannertoreadaDNAtagor,ifthetagismissing,swab(擦拭)theartworktotestforDNAinside.Thentheycheckthemolecularmarkeragainstadatabaseofartiststomakesuretheworkisreal.Somefamousartistshavealreadyagreedtotrythishigh-techwaytosigntheirart.That’sbecausefakesarehugeproblemsintheartworld.It’ssaidthatasmanyastwooutofeveryfiveartworkssoldthesedaysarefakes.Someseemsoconvincingthatexpertsareneededtoprovewhetherthey’rerealornot.Althoughapaintingmaybeperfectlycopied,itwouldbenearlyimpossibletocopyaDNAtag.Applyingthetagdoesn’tharmtheworkitself.Evenbetter,theyeachcostonlyabout$150—aninexpensivepriceforatechnologythatcouldsavemuseums,artgalleries,andprivatecollectorsbillions.1、What’sthemainideaofthethirdparagraph?A．HowtheDNAtagworks.B．HowtheDNAtagismade.C．Whatadatabaseisusedfor.D．WhatcanbedoneiftheDNAtagislost.2、WhichofthefollowingisNOTtheadvantageoftheDNAtag?A．Itisaffordable.B．Itcanhardlybecopied.C．Itcanrenewautomatically.D．Itdoesnodamagetotheartworks.3、Whatdoestheunderlinedword“convincing”inParagraph4probablymean?A．Authentic.B．Elegant.C．Attractive.D．Complex.4、Whatmightbethebesttitleofthetext?A．CopyingaDNATagB．SpottingaFakeC．TheDiscoveryofDNAD．ANewApplicationofNaturalDNA22．（8分）Thepursuitoflongevityhaslongbeenonpeople’sminds,promptinganabundanceofresearchontheeffectsoffoodanddietonthehumanlifespan.AccordingtorecentresearchfromtheUCIrvineInstitute,drinkingcoffeeandwinecouldhelpyoulivelonger.The90+Studyevaluatedmorethan1,600peopleovertheageof90fortheirlifestylehabitsandotherqualitiesthatmighthavecontributedtotheirlongevity.Participantswerevisitedeverysixmonths,whentheyweregivenvarioustests.Researchersalsocollectedinformationabouttheparticipants’diets,lifestyles,andmedicalhistories.Theyfoundoutthattwoofthehabitsthathelpedpreservelivesthemostaredrinkingalcoholandcoffee.“Ihavenoexplanationforit,”admittedDrClaudiaKawas,“butIdofirmlybelievethatmoderate(適度的)drinkingimproveslongevity.”Soshouldweallbedrinkingmorecoffeeandwine?Whilethatwouldbegreatnews,theresearchmaynotbeasdefinitiveasitseems.“Moststudiesaboutalcoholconsumption,includingThe90+Study,areobservational,sowecanonlysaythatsomethingaboutdrinkingisassociatedwithhealthandlongevity,”registereddietitianJenniferMarkowitztoldTheDailyMeal.“I’dbecurioustoseeifthecoffeeandalcoholdrinkerssharedotherimportanthabitsorlifestylefactorsthatmightalsoplayintotheirlongevity.”Inotherwords,itmightnotbethewineandcoffeethat’shelpingpeoplelivelonger,butthetwosubstancesdohavesomeconsiderablehealthbenefits.“Wineandcoffeearepackedwithantioxidants(抗氧化劑)whichareknowntoprotectourbodiesfromdamagecausedbyfreeradicals,”explainedregistereddietitianKeriGanstoTheDailyMeal.“Researchonantioxidantshasshownseveralheathbenefits,includingthepossibilitytheymaylowertheriskoftype2diabetes,improvecognitivefunction,decreasetheriskofdementia,andlowertheriskofheartdisease.”Moderatedrinkingcanbebeneficialaccordingtootherstudies—solongasit’smoderate.1、What’sthepassagemainlyabout?A．Antioxidantshavingapositiveeffectonthelifespan.B．Theeffectsoffoodanddietonthehumanlifespan.C．Advocatingdrinkingwineandcoffeeinourdailylife.D．Moderatedrinkinghelpingpeoplelivelonger.2、Theinformationwascollectedabouttheparticipantsinthe90+Studyexcept________.A．foodconsumptionB．lifestyleC．hobbiesD．medicalhistory3、Howcanthewineandcoffeebenefitpeople’shealth?A．Theyprovidepeoplewithessentialnutrition.B．Theyarerichinantioxidants.C．Theyprotectfreeradicalsinhumanbodies.D．Theycanbringrelieftopain.4、Whatcanweinferfromthepassage?A．Notallthepeopleparticipatinginthestudyareover90.B．Moststudiesaboutalcoholconsumptionarebasedonobservation.C．Over-drinkingcanalsobebeneficialaccordingtootherstudies.D．Antioxidantscancuretype2diabetes.23．（8分）Withallthewars,fightingandsadnessintheworldtoday,it'snotonlynecessary,butalsoessentialtohaveagoodsenseofhumorjusttohelpusgetthrougheachandeverydayofourlives.Puttingasmileonsomeone'sfacewhenyouknowtheyarefeelingdowninthedump,makesmefeelgoodandwarmsmyheart.Howwouldyoufeelifyoucouldnotjokearoundwithyourwife,husband,child,co-worker,neighbor,closefriends,orevenjustsomeonethatyouarestandinginlinewithatyourcornerstore?Iamalwayssayingthingsthatmakeotherssmileorlaugh,evenifIdon'tknowthepersonI'mjokingaroundwith.MyGrandmaalwaysfoundhumorineverythingshedid,evenifitwasthehardestjobanyonecouldimagine.Thisnotonlyrelievesstressinanysituation,butalsoiscommoncourtesy(禮貌)tospeaktoothersthatarearoundyou.Iknowofafewpeoplethatdon’thaveafunnyboneintheirbodies,astheysay.Everyonearoundthemcouldberollingonthefloorafterhearingagreatjokeandtheywouldsittherewithouttheslightestsmileontheirface.Theydon'tgetthejokethatmakesotherslaugh.Iambustingagutwhiletheyjustsitthere,lookingatmeasifIwerefromouterspace.Howcanpeoplenotgetareallyfunnyjoke?Laughingisessentialtokeepyourstresslevelsundercontrol.Withouthumorwewouldfindourselveswithalotofpsychologicalproblems,oronalotofmedicationstokeepusfromgoingcrazy.Thereistoomuchsadnessinthispresentworld.Itdrivespeoplecrazy.Weallneedtofindawaytoignorethesadnessandbringalittlelightintoourlives.So,Ibelieveourbestmedicineistogettogetherandtellsomejokesandhavesomefunlaughingtogether.1、Whatistheauthor’sattitudetowardsthepresentworld?A．SatisfiedB．PositiveC．CriticalD．Indifferent2、Thephrase“bustingagut"inthethirdparagraphcanbereplacedby.A．explainingcarefullyB．speakingloudC．keepingsilentD．laughinghard3、Accordingtotheauthor,humorisusefulintheaspectthat.A．itmakespeoplemoreconfidentB．itcanhelpgetridofthecrueltyintheworldC．itcanpickuppeople’sspiritsD．itcanhelppeoplegetonwellwithothers4、Inwritingthepassage,theauthormainlyintendsto.A．introduceapracticalwaytogetthroughdailylifeB．encouragepeopletobehumorousindailylifeC．convincepeopleofthepowerofhumourD．talkabouthisownunderstandingofhumor24．（8分）Sleepdeprivation(缺失)isanimportanthiddenfactorinloweringtheachievementofschoolpupils,accordingtoresearcherscarryingoutinternationaleducationtests.Itisaparticularprobleminrichercountrieswithsleepexpertslinkingittotheuseofmobilephonesandcomputersinbedroomlateatnight.Sleepdeprivationissuchaseriousproblemthatlessonshavetobedraggeddowntoalowerleveltosuitsleep-deprivedlearners,thestudyfound.Theinternationalcomparison,carriedoutbyBostonCollege,foundtheUnitedStatestohavethehighestnumberofsleep-deprivedstudents,with73%of9-and10-year-oldsand80%of13-and14-year-oldsidentifiedbytheirteachersasbeingnegativelyaffected.Inliteracy(讀寫能力)teststherewere76%of9-and10-year-oldslackingsleep.Thiswasmuchhigherthantheinternationalaverageof47%ofprimarypupilsneedingmoresleepand57%amongthesecondaryagegroup.Othercountrieswiththemostsleep-deprivedyoungsterswereNewZealand,SaudiArabia,Australia,England,IrelandandFrance.High-performingFinlandisalsoamongthemostlackinginsleep.CountrieswiththebestrecordsforgettingenoughsleepincludeAzerbaijan,Kazakhstan,Portugal,theCzechRepublic,JapanandMalta.Theanalysiswaspartofthehugedate-gatheringprocessforglobaleducationrankings,theTrendsinInternationalMathematicsandScienceStudy(TIMSS)andProgressinInternationalReadingLiteracyStudy(PIRLS)“Ithinkweunderestimatetheimpactofsleep.Ourdatashowthatacrosscountriesinternationally,onaverage,childrenwhohavemoresleepachievehigherinmaths,scienceandreading.Thatisexactlywhatourdatashow,”saysChadMinnichoftheTIMSSandPIRLSInternationalStudyCenter.“It’sthesamelinkforchildrenwhoarelackingbasicnutrition,”saysMrMinnich,basedattheLynchSchoolofEducation,BostonCollege.“Ifyouareunabletoconcentrate,toattendmentally,youareunabletoachieveatyourbestlevel,becauseyourmindandbodyareinneedofsomethingmorebasic.Sleepisafundamentalneedforallchildren.Ifteachersreportsuchlargeproportionsofchildrensufferingfromlackofsleep,it’shavingasignificantimpact.Butworsethanthat,teachersarehavingtoadjusttheirinstructionbasedonthosechildrenwhoaresufferingfromalackofsleep.Thechildrenwhoaresufferingfromalackofsleeparedrivingdowninstruction.”Thatmeansthateventhechildrenwhoaregettingenoughsleeparestillsufferingfromthissleep-relatedlowering.1、WhatdidtheresearchersofBostonCollegetrytofindA．Whychildrendon’tgetenoughsleepB．HowmanyhourschildrensleepeverynightC．TherelationshipbetweensleepandtestresultsD．Therelationshipbetweensleepandhealth2、Manychildrensufferfromsleepdeprivationbecause_________.A．theysitinfrontoftheTVfortoolongB．theycanhardlysleepsoundlyanddeeplyC．theirhomeworkoccupiestoomuchoftheirtimeD．moderntechnologicaldevicesconsumealotoftheirtime3、Whichofthefollowingcountrieshasthemostsleep-deprivedstudentsA．Japan B．MaltaC．Finland D．Portugal4、WhyarechildrenwhogetenoughsleepalsovictimsA．Becausetheyaredisturbedbysleep-deprivedstudentsB．Becauseteachingisdrivendownbysleep-deprivedstudentsC．Becausetheyhavetospendtimehelpingsleep-deprivedstudentsD．Becausetheteacherswastetimediscipliningsleep-deprivedstudents25．（10分）Crossingyourlegsisanextremelycommonhabit;mostpeopledon’tevennoticethatthey’redoingitwhentheysitdown.Whileyoumayfinditcomfortabletositwithonekneecrossedovertheother,itmightbecausinghealthproblemsthatyouarenotawareof.AstudypublishedinBloodPressureMonitoringstatedthatsittingwithyourlegscrossedcanincreaseyourbloodpressure.Thereasonthishappensisbecausethebloodinyourlegshastoworkagainstgravitytobepumpedbacktoyourheart,crossingonelegovertheotherincreasesresistance,makingitevenharderforthebloodtocirculate.Thiscausesyourbodytoincreaseyourbloodpressuretopushthebloodbacktotheheart.Youwon’tfeelanyimmediateeffects,butifyousitforlongperiodsoftimeit’simportantthatyoutakenoteofhowlongyouhaveyourlegscrossedfor.Youshouldn’thaveyourlegscrossedformorethan15minutes,andit’simportantthatyougetupandwalkaroundatleastonceeveryhour.Crossingyourlegscanalsoleadtoneckandbackpain.Ideally,it’sbestforourbodiestositwithourfeetplantedflat,hipwidthapart,onthefloor,butit’snoteasytomaintainperfectposturealldayattheoffice.Whenyousitwithyourlegscrossedyourhipsareinatwistedposition,whichcancauseoneofyourpelvicbonestorotate.Sinceyourpelvicbonesupportsyourneckandspine,thiscancausepressureonyourlowerandmiddlebackandneck.Youalsomightnoticethatwhenyousitwithyourlegscrossedforlongperiodsoftimeyourfeetandlegsgettinglyorhavethefeelingofbeingasleep.Thisisbecausewhenonelegsitsontopoftheotheritcausespressureontheveinsandnervesinyourlegsandfeet.Itcancausenumbnessand/ortemporaryparalysisinthelegs,ankles,orfeet.Whilethefeelingofdiscomfortmayonlylastaminuteortwo,repeatedlycrossingyourlegsuntiltheyfeelnumbcancausepermanentnervedamage.Sonexttimeyousitdown,trytogetyourselfinthehabitofsittingwithbothofyourfeetonthefloor.Notonlywillithelpyourpostureandstability,butitwillalsosaveyourhealthinthelongrun.1、Crossinglegswhensittingmaycausethefollowingexcept______.A．bloodpressureincreaseB．neckandbackpainC．temporarynervedamageD．numbnessinthelegs2、Whichofthefollowingistrue?A．Allpeopleareusedtosittingwithlegscrossedwithouttheirownnotice.B．Researchersareunawareofhealthproblemscausedbythecommonsittinghabit.C．Itiscrucialbutimpossibletogetintothehabitofsittingwithfeetplantedflat.D．Crossinglegsincreasesresistanceofbloodcirculationthroughoutthebody.3、Afterreadingthispassage,whatwillpeoplebemorelikelytodo?A．MaintainahealthysittingpostureB．FindacomfortablewaytositC．MovethenecktoeasediscomfortD．Doexercisestolowerbloodpressure第三部分語言知識運用（共兩節(jié)）第一節(jié)（每小題1.5分，滿分30分）閱讀下面短文，從短文后各題所給的A、B、C和D四個選項中，選出可以填入空白處的最佳選項．26．（30分）Justseveraldaysago,aviolentstormhitourcommunity.Ilookedoutofthewindowandwitnessedatreebeing1bythefiercewinds.Thebranchesbent,andswayedbackandforth,thankstotheir2toavoidbreaking.Theleavesdesperatelystucktothebranchesbecausetheirlife3thetree.Thepowerfultrunkthat4thetreeuprightbentslightlybackwardsfromtheforceinabattleto5itsposition.Afterthestormhadpassed,thetreegracefullyreturnedtoits6positionstandingtallamongthechaos.Itmanagedto7thestorm.Itdidn’tlookthesameasleaveshadshedfromitsbranchesandthesoilhadloosenedabit,butwhat8isthatthetreewonthefightforitslife.ForalongtimeIcouldn’tunderstandwhythistree9myattentionthewayitdid.Astimepassed,itbecame10thatitwasn’tjustaboutthetreebutabouttheroots,which,althoughunseen,digdeepintothesoilproviding11andnutrition.Therootsallowthetreetobeabletotakea12becausetheyaretheretosupportthem.Icouldn’tbutaskmyselfhowdeeptherootsareinmylife.13,thenexttimeyoucatchyourkids14,whenthejobisdrivingyoucrazy,whenyouareunderpaidandthe15istight,andwhenthestormsoflifeareraging,gobacktoyourroots.Lifeisfullof16.Theywillmakeyousway,makeyou17,makeyoulosesomeleavesbutthedeeperyourrootsthestrongeryoustand.Facedwith18youmightbendbutdon’tbreak.Nomatterhowhardthewindblowsdon’tletlife19youintoanuncomfortableposition.Your20liesinyourroots.1、A．crushedB．a(chǎn)busedC．brokenD．removed2、A．heightB．thicknessC．flexibilityD．outline3、A．a(chǎn)nsweredforB．dependedonC．cateredforD．touchedon4、A．heldB．tiedC．pulledD．raised5、A．a(chǎn)chieveB．reachC．establishD．maintain6、A．currentB．finalC．originalD．comfortable7、A．exploreB．a(chǎn)voidC．chaseD．survive8、A．countsB．differsC．concernsD．reveals9、A．fixedB．transferredC．escapedD．caught10、A．strangeB．obviousC．possibleD．reasonable11、A．surroundingsB．resourcesC．probabilityD．stability12、A．beatingB．standC．chanceD．turning13、A．HoweverB．ThereforeC．NeverthelessD．Besides14、A．misbehavingB．strugglingC．withdrawingD．misunderstanding15、A．securityB．deadlineC．moneyD．community16、A．surprisesB．choicesC．stormsD．changes17、A．smileB．bendC．hesitateD．a(chǎn)dvance18、A．opportunitiesB．challengesC．tasksD．differences19、A．trickB．a(chǎn)rgueC．forceD．a(chǎn)dmit20、A．courageB．a(chǎn)mbitionC．valueD．strength第二節(jié)（每小題1.5分，滿分15分）閱讀下面材料，在空白處填入1個適當?shù)膯卧~或括號內(nèi)單詞的正確形式。27．（15分）InCanadaandtheUnitedStates,peopleinvitefriendsoverforameal,apartyorjustforcoffeeandconversation.Herearekindsofthingspeoplesaywhentheyinvitesomeonetotheirhomes:"Wouldyoulike1．(come)overfordinnerthisSaturdaynight?""Hey.We2．(have)apartyonFriday.Canyoucome?"Toreplytoaninvitation(邀請),eithersaythankyouandaccept,orsayyou'resorryandgive3．excuse."Thanks,I'dloveto.Whattimewouldyoulikemetocome?"or"Oh,sorry.Ihaveaticket4．a(chǎn)movie."Sometimes,however,peopleusewords5．soundlikeinvitationsbutwhicharenotrealinvitations.Forexample,“Pleasecomeoverforadrinksometime.""Whynotgettogetherforapartysometime?""Whydon'tyoucomeoverandseeussometimesoon?"Theyarereallyjustpolitewaysof6．(end)aconversation.Theyarenotrealinvitationsbecausetheydon'tmention(提到；談到)acertaintimeordate.Theyjustshowthatthepersonistryingtobe7．(friend).Toreplyto8．(expression)likethese,peoplejustsay"Sure,thatwouldbegreat!”or"OK.Yes,thanks."Sonexttimewhenyouhearsuchsoundslikeaninvitation,listen9．(careful).Isitarealinvitation10．isthepersonjustbeingpolite?第四部分寫作（共兩節(jié)）第一節(jié)短文改錯（滿分10分）28．（10分）假定英語課上老師要求同桌之間交換修改作文，請你修改你同桌寫的以下作文。文中共有10處語言錯誤，每句中最多有兩處，錯誤僅涉及一個單詞的增加，刪除或修改。增加：在缺詞處加一個漏字符號（∧），并在其下面寫出該加的詞。刪除：把多余的詞用斜線（╲）劃掉。修改：在錯的詞下面劃一橫線，并在該詞下面寫出修改后的詞。注意：1.每處錯誤及其修改均僅限一詞；2.只允許修改10處，多者（從第11處起）不計分。LastMonday,myauntwenttoattendameeting.Afterthemeeting,shewenttoarestaurantforalunch.Therefore,whenitwastimetopaythebill,shecouldn’tfindherpurse.Shethoughtitmusthavestolen.Justthen,amaninhisearlytwentycameupandpaidforher.Myauntwasverygratefully.Theytalkedabouteachotherforawhileandmyauntfinallyrealizewhohewas.Abouttenyearsbefore,myauntcollectedsomemoneytohelpingaboy.Thatyoungmanwastheboy.Myauntdidn’trecognizeher,butthek