2024屆北京市延慶區(qū)高三3月份第一次模擬考試英語試卷含解析

2024屆北京市延慶區(qū)高三3月份第一次模擬考試英語試卷請考生注意：1．請用2B鉛筆將選擇題答案涂填在答題紙相應位置上，請用0．5毫米及以上黑色字跡的鋼筆或簽字筆將主觀題的答案寫在答題紙相應的答題區(qū)內(nèi)。寫在試題卷、草稿紙上均無效。2．答題前，認真閱讀答題紙上的《注意事項》，按規(guī)定答題。第一部分（共20小題，每小題1.5分，滿分30分）1．ManyquestionshavebeenansweredbyJohn.Hemusthavepreviewedthelessonslastnight,____he?A．needn’t B．hasn’t C．didn’t D．mustn’t2．Wherewasit______theroadaccidenthappenedtheotherday?A．that B．whenC．how D．which3．Ahurricanesweptthroughmyvillage.Justaswewerebeginningtolosehope,itsuddenlystopped.Itisreally“”.A．All’swellthatendswellB．LightningneverstrikestwiceinthesameplaceC．ItneverrainsbutifpoursD．Afriendinneedisafriendindeed4．—Iwanttolearntennis.Wouldyouliketohelpme?—.Butlearningtennisisnowalkinthepark.A．NokiddingB．NowonderC．NoproblemD．Noway5．Cambridgegaveapositiveanswerinquiriesonwhetheritrecognizesgaokaoscores.A．infavorof B．inresponsetoC．insaluteto D．inconsequenceof6．Advertisingisdifferentfromotherformsofcommunicationinthattheadvertiserpaysforthemessage.A．todeliver B．delivered C．tobedelivered D．delivering7．Lastweek,onlytwopeoplecametolookatthehouse,________wantedtobuyit.A．noneofthem B．bothofthem C．noneofwhom D．neitherofwhom8．Iusuallydothewashingupandleavethecookingtomywife，______she’sabettercookthanme．A．unless B．a(chǎn)s C．eventhough D．incase9．Interestisas________tolearningastheabilitytounderstand，evenmoreso.A．vital B．a(chǎn)vailableC．specific D．similar10．Maryreallyhardonhisbookandthinkshe’llhavefinisheditbyFriday.A．worked B．hasbeenworkingC．hadworked D．hasworked11．Smelltheflowersbeforeyougotosleep,andyoumayjust________sweetdreams.A．keepupwith B．putupwith C．endupwith D．catchupwith12．Themanageristryingtofindamantorecommendhowthejob.A．isdone B．bedone C．shoulddone D．todo13．—Iwonderwhyhehasbeenactingsostrangelythesedays．—Recentpressureatworkmay____hisbehavior． A．a(chǎn)ccountfor B．callfor C．changefor D．standfor14．ProfessorLi________forhisinformativelecture,waswarmlyreceivedbythestudents.A．knownB．knowingC．havingknownD．tobeknown15．—Startingaconversationisagoodwaytokilltimeonthetrain.—_______.Ialsoliketotalkwithstrangers.A．Thatistrue B．ItsoundslikefunC．Idon’tthinkso D．Youarekidding16．—ThankyouverymuchforgivingmeahandwhenIwasintrouble.—Don’tmentionit.Ionlydidwhatanyoneelse_______inmyplace.A．mustdo B．couldhavedoneC．woulddo D．canhavedone17．---I’mafraidthecompanywillnothireme.---Comeon,Bill,relax!Youhavealotofexperienceandfinereferencesandyourcollegeworkisidealbackgroundforthem.______________A．It'llbenosweat.B．Allgoodthingscometoanend.C．Wordspaynodebts.D．Don'tgivemeanyjaw.18．Aheartylaughrelievesphysicaltension,_____yourmusclesrelaxedforoverhalfanhour.A．toleave B．left C．leaving D．leave19．Youngcoupleswillbehappytoseetheirbabies_______withgoodhealthandintelligencewhentheyareborn.A．tobless B．blessingC．blessed D．beingblessed20．IamabetterreaderthisyearthanIwaslastyearbecauseI________tohundredsofnewconceptsandideas.A．haveexposedB．hadbeenexposedC．havebeenexposedD．wasexposed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）TheFirstCityYouShouldVisitNextYearIt’sabouttimetomaketravelplansfor2018,andtheexpertsatLonelyPlanetsayonecityshouldbefirstonyourlist.Seville,Spaintooktophonorsinthetravelsite’sannualBestinTravelroundup(簡報).SevillerankedfirstduetoitsrelativelynewnetworkofbikingpathsandasetofspeciallocalactivitiesrelatedtotheanniversaryoflegendarypainterBartoloméEstebanMurillo.Thecityhasalsoenjoyedsomescreenlovelately.Sevillewasfeaturedon“GameofThrones"thisyearandwillhosttheEuropeanFilmAwardsin2018,makingitaprimetimetovisitthisbrillianthistoricalhangout.Evenifyoudon’tstopbynextyear,Sevilledeservesaspotonyourtravelbucketlist.Thecityisknownforitsrichhistory,superbarchitectureandauthenticculturethatincludesplentyoftapastastingandFlamencodancing.Must-seesincludeSeville’scentralcathedral(大教堂),aUNESCOworldheritage(遺產(chǎn))site.TheAlcázar'spalaceandgardenswerebuiltovera100-yearspan.Offthebeatentrack,you’11findcharmingneighborhoods,bars,marketsandchurcheswaitingforyourexploration.USAToday,saysit’sbesttovisitSevilleinspring,whenweatheriswarmandthecitycelebratesboththeEasterHolyWeekanditsannualfair.1、177．Whatdotheunderlinedwords“GameofThrones"inParagraph2referto?A．AnactivityB．ATVseriesC．ApalaceD．Apainting2、179．WhatdoweknowaboutSevillefromthethirdparagraph?A．It’sdiverseB．It’sconservativeC．It'sfashionableD．It’scontroversial3、181．WhenisprobablythebesttimetovisitSeville?A．JanuaryB．AprilC．SeptemberD．November22．（8分）VisitorstothegroundsofNewCollegeatEngland’sOxfordUniversitypassunderanirongatewiththeadvice:Mannersmaketheman.Evenafteranappropriateupdateto:Mannersmaketheperson,it’sthought-provoking(引人深思的)—especiallytotoday’sAmericans.Whenwethinkaboutwhatmakestheperson—it’smorelikelythedegree,thejob,thesalary.Sincewhendowecountmannersasameasureofsuccess?Wedoknowthatthesewouldmakelifenicer,ifmoretolerable.However,weforgetoroverlookourmanners.So,itseems,doeseveryoneelse—including,unluckily,ourchildren.Asauniversitypresident,oneofmygreatjoysistovisitourcampusesandseeourstudents,thoughwe’reseparatedbydifferentgenerations,interests,and,ofcoursedressing,eachstudenttellsmesomethingwithinthefirstfewminutesthatwemeet:whetherheorshehasbeentaughtmanners.Isensethisindifferentways:throughherwordsorhergestures,inthewayshelistensorhowhereferstofriendsandfaculty,howshegreetsandsaysgoodbye,howherespondswhenanelderlypersonenterstheroom.Intheabsenceofmanners,however,Imakesomeallowances.Forinstance,themanyethnic(種族的)groupsthatstudentsrepresentoftenhavedifferentexplanationsofwhatmakesupgoodmanners.Inothercases,somestudentsmayrejectwhatthey’velearnedtobreakfromtheirparentsandbeacceptedbyotherstudents.Whetherstudentsarebeingdifferentoropenlyopposing,arecentexperienceIhadwiththemtellsmethatthere’ssomehopeforrevivingandgoodmanners.Goodmannersdon’tjustguaranteeacceptance.Goodmannersopendoorstodeeperconnectionsandmoremeaningfulrolesinoursociety.Goodmannersaregentlesignalsthatshowwecareaboutoneanotherandallowustorelatetoanotherpersoninathoughtfulwaybutatarespectabledistance.1、Whichofthefollowingisseldomamarkofsuccesstopeopletoday?A．Handsomeincome.B．Anacademicdegree.C．HighranksintheofficeD．Politebehavior.2、Whatdoestheunderlinedpart“makesomeallowances”inParagraph4probablymean?A．treattheabsenceofmannersdifferentlyB．rejecttheabsenceofmannersC．opposebadmannerssomehowD．partlypermitbeingintheabsenceofmanners3、Whichofthefollowingisthebenefitbygoodmanners?A．GoodmannersmakespeoplethoughtfulB．GoodmannershelpdeeperconnectionswithothersC．GoodmannersguaranteeacceptanceofourselvesD．Goodmannersinspirepeopletocareaboutoneanother23．（8分）Connectingwithpeoplehasbecomesomucheasierwithadvancingtechnology.Tasksthatoncerequiredapostagestamporcarrierpigeonarenowassimpleastappinganameorevenafaceonyourscreen,andyou’reconnected.Butalsoeasierisunconsciouslygettingcaughtupinadilemmabyviolatingcertainnewrulesforcommunicating.Abigoneforsome:Don’tcalluntilyou’vetextedtoconfirmit’sOKtocall.Butthat’sjustthebeginning.“I’musuallyprettymildandnotmuchbothersme,”saidMarkAngielle,a22-year-oldofficemanagerfromWhitePlains,NewYork.Buttheonethingthathehatesmorethananythingelseinlifeistheterribleone-wordmessage—“K.”“Attheveryleastreplywith,Gotit.”hesaid“Atleastgivemeafewwordshere.You’renotthatbusy.”Therearehundreds,perhapseventhousands,ofotherswhohavetakenLosocialmediatoexpresstheirdistasteforpeoplewhodon’tfollowtheunwrittenrulesofdigitalcommunication.“Theserulesaresimplyanewdisplayofaphenomenonwe’veseeninthepast,”saidJamesIvory,professorofcommunicationaVirginiaTech.Inthesamewaythatgenerationsandsmallgroupsoffriendshavetheirownslangandcustoms,internetculturehasgivenbirthtotechnology-dependentbeingsthathavetheirownuniquesetofroutine.Butnoteveryonegetsthepoint.Unlikelanguage,digitalcommunicationcanbefilledwithambiguousclues(線索、跡象)thatthepersonontheotherendofthecall,textoremailmayormaynoteasilyunderstand.“Assoonaspeoplearen’ttalkingfacetoface,thefirstthingthatgetslostissomeoftherichnessofthebodylanguage,”Ivorysaid,“Peopleimmediatelyfillthatgapbyusingemoji(表情符號)tosumupafeelinginseconds.“There'sgreatpotentialfordanger,”Ivorywarned.“What'sconsideredpoliteinoneformmightbeinappropriateorrudeinanotheroccasion.”1、WhatcanyouinferaboutMarkfromParagraph2?A．Heisabusinessmanwithabadtemper.B．Hecomplainsaboutsocialmanners.C．Hecan’tbearone-wordmessages.D．Hedislikeabusybusinesslife.2、Accordingtothetext,whichofthefollowingbreakstherulesforcommunicating?A．Johnsays“Igotit.”tohisbossfacetoface.B．JimcallsBillwithoutconfirminginadvance.C．MarytextsLilytomakesureifshecancallher.D．Jacksends“Thanksalot”tohisbusinessfriends.3、Whymaypeoplemisunderstandeachotherduringdigitalcommunication?A．Emojicannotsumupfeelings.B．Peopleusetheirownslangandcustoms.C．Therearelargequantitiesofwrittenrules.D．Peoplegetswrongmessageswithoutclearclues.4、Whatarepeopleexpectedtodoafterreadingtiepassage?A．Toobeytheirowndigitalcommunicationrules.B．Tobeawareofrulesduringdigitalcommunication.C．Touseadvancingtechnologyevenwithdisadvantages.D．Tokeeppacewithdigitalcommunicationdevelopment.24．（8分）Lovetosinkintoyourchairsandrelaxwhenyougettoschool.Thenyouwillnotbehappytohearthatschoolsallovertheworldareseriouslyconsideringexchangingtraditionaldesksforoneswithnoseatsatall—Yes,thatmeansyouwillbeencouragedtostandthroughthosealreadytoolongmathandsciencelessons!Whywouldanyoneeventhinkofputtingkidstosuchcruelty.Expertssayitimprovestheirhealthandhelpsfightobesity.Whilethatmayseemalittlefar-fetched(牽強的),theofficialsatthefewschoolsaroundtheworldseemtoagree.AmongthemareeducatorsfromtheCollegeStationIndependentSchoolDistrictinTexas,whorecentlycompletedaweek-longexperimentinvolving480studentsacrossthreeelementaryschools.The374kidsthatagreedtoparticipateinthestudywereprovidedadevicethathelpedrecordstepcountandcalorieconsumptionovertheentireperiod.All25teachersinvolvedinthestudyreportedthatstudentsappearedtobemorealertandconcentratebetter,whenallowedtostand.Theonethingthatdidsurprisetheresearcherswasthatyoungerkidsweremorewillingtostaystandingthankidsinhighergrades.Theybelievethismayhavesomethingtodowiththefactthatafteryearsofbeingaskedto“sitstill”,olderkidshaveahardertimeadjustingtothisunexpectedfreedom.Americanschoolsarenottheonlyonesreportingsuccesswithstand-updesks.FourschoolsinPerth,Australia,whichhavebeentestingthemsinceOctober2013,haveseensimilarresults.InMay2014,GroveHousePrimarySchoolinWestYorkshire,becameEurope’sfirsttestone,withaseven-weektrialthatinvolvedtheuseofdesksmadebyErgotronintheirfifth-gradeclassrooms.Whileofficialresultsarenotoutyet,earlyreactionsfrombothteachersandstudents,havebeenextremelyencouraging.Thefindingsofthesestudiesandothersdonepreviously,allseemtomeanthatallowingkidstomovearoundinclassroomsisawin-winforstudentsandteachers—ithelpskidsgethealthierandprovideseducatorswithamoreattentiveaudience.1、Accordingtothefirstparagraph,whatmaymakethestudentsatschoolunhappyisthat_____.A．theyhavetoexchangedeskswitheachotherB．theyhaveexchangedtraditionaldesksforoneswithnoseatsC．therearenoseatsforthemtositinclassD．theofficialsshownosympathytothematall2、Accordingtotheteachers,olderstudentsmaynotlikestand-updesksbecause_____.A．theyareclevererthanyoungerstudents. B．theyareeasilytiredofstandinglongC．theyhaveformedthehabitofsitting. D．theydobadlyinclasswhilestanding3、Whatismostlikelytobetheresultoftheseven-weektrial.A．Thestandingdeskscan’tbeusedatall.B．Itisgoodforstudentstousestand-updesks.C．Moretestsshouldbedoneinotherschools.D．Thestudentsaredifferentinpersonality.4、Whydotheteacherslikethestandingdesks.A．Becausetheeducatorscandrawthestudents’attention.B．Becausetheteacherscankeepthestudentshealthy.C．Becausethestudentscanhaveawalkintheclassroom.D．Becausethestandingdeskscankeepthestudentsconcentrated.25．（10分）Measles(麻疹)isonlyfoundinhumanbeings.Thereisahighlyeffectiveandsafevaccine(疫苗)forthedisease.So,intheory,measlescouldbedestroyed.Yetthenumberofmeaslescasesisontherise.TheWorldHealthOrganization(WHO)reportsthat,inthefirstthreemonthsof2019,thenumberofcasesisthreetimeshigherthanitwaslastyear.Africaalonehashada700percentincreasecomparedtolastyear.TheDemocraticRepublicofCongoreported67,000measlescasesand901measles-relateddeathsin2018.Thisyear,WHOofficialshavenotedmorethan40,000suspectedmeaslescasesinthecountry.Thatnumberincludes284measles-relateddeathsinthefirstweeksof2019.BetweenSeptember2018andFebruary2019,Madagascarreportedover67,000measlescases,including828deaths.Dr.Fauci,whodirectstheNationalInstituteofAllergyandInfectiousDiseaseintheUSA,saidthat―onein10childrenwhogetinfectedwithmeasleswillgetanearinfectionthatcouldcausedeafness.Onein20wouldgetpneumonia.Oneinathousandwouldgetbrainswelling,andonetothreeperthousandwoulddie.Tosaythatmeaslesisaslightdiseaseiscompletelyincorrect.WalterOrensteiniswiththeEmoryUniversityVaccineCenterinAtlanta,Georgia.Hehasspenthislifeworkingtoendmeasles.Orensteinsayspossibleeffectsofthediseaseareworseinpoorcountries.―Inthosecountrieschildrenarealreadyatgreaterrisk.Theymaybemalnourished(營養(yǎng)不良的).Theymayhavedamagedimmunesystems.Theymaybeunderweightandmayhavenoaccesstohealthcaresomeaslesisabigkiller,hesaid.Youhavea90percentchanceofgettingmeaslesifyouhavenotbeenvaccinatedandyoucomeincontactwithsomeonewhohasit.Dr.RebeccaMartinistheDirectoroftheCenterforGlobalHealthattheU.S.CentersforDiseaseControl.SheisworkingtoremovemeaslesfromAfricacompletely.―Itisveryinfectious.Itwillfindnearlyeverybodywhoisnotprotectedagainstmeasles,Martinsaid.Healthexpertsadvisepatientstogettwotreatmentsofthemeaslesvaccine.U.S.healthofficialssayeducatingparentsaboutboththediseaseandthevaccineisanimportantstepinstoppingthespread.Equallyimportantismakingvaccinationatopgoalofhealthsystemsworldwide.1、Thewritershowsthesharpincreaseinmeaslescasesby.A．givingexamples B．listingfiguresC．a(chǎn)nalyzingcauses D．followingtimeorder2、Thefollowingarethepossibleresultsofmeaslesexcept.A．a(chǎn)nearinfection B．pneumoniaC．brainswelling D．beingunderweight3、Whatcanweinferfromthelasttwoparagraphs?A．Youaresuretogetmeaslesifyouhavenotbeenvaccinated.B．Itissafetocomeincontactwithsomeonewhohasmeasles.C．Parentsshouldbeeducatedaboutboththediseaseandthevaccine.D．MakingvaccinationagoalofhealthsystemsisonlynecessaryinAfrica.4、Thepurposeofthetextisto.A．showtheserioussituationofmeaslesB．provemeaslescouldbedestroyedC．describetheresultoftheresearchonmeaslesD．warnusofthecausesofmeasles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）Alongtimeago,therewasanemperor(皇帝).Onedayhetoldhishorsemanthatifhecouldrideonhishorseand1asmuchlandareaasheliked,hewouldgivehimtheareaoflandhehadcovered.2enough,thehorsemanquicklyjumpedontohishorseand3asfastaspossibletocoverasmuchlandareaashecould.He4ridingandriding,whippingthehorsetogoasfastaspossible.Evenwhenhewas5ortired,hedidnotstop6hewantedtocoverasmuchareaaspossible.Whenheatlastcoveredalargeamountofland,hewasexhaustedandwas7.Thenheaskedhimself,“WhydidI8myselfsohardtocoversomuchlandarea?NowIamdyingandIonly9averysmallareato10myself.”Theabovestoryis11tothejourneyofour12.Wepushourselvesveryhardeverydaytomakemore13,togainpowerorrecognition.Weneglect(疏忽，忘記)our14,timewithourfamilyandtoappreciate(欣賞)thesurrounding15andthethingswelovetodo.Oneday16welookback,wewill17thatwedon’treallyneedthatmuch,18thenwecannotturnbacktimeforwhatwehave19Lifeisnotaboutmakingmoney.Lifeisdefinitely(肯定地)notaboutwork!Workisonly20tokeepuslivingsoastoenjoythebeautyandpleasuresoflife.1、A．use B．cover C．work D．get2、A．Good B．Strange C．Sure D．Interesting3、A．rode B．ran C．expanded D．struggled4、A．kepton B．a(chǎn)skedfor C．gaveup D．succeededin5、A．sad B．excited C．confused D．hungry6、A．but B．so C．because D．if7、A．sleeping B．a(chǎn)rguing C．dying D．smiling8、A．push B．make C．destroy D．prove9、A．need B．have C．find D．show10、A．live B．bury C．support D．sleep11、A．useful B．certain C．similar D．special12、A．future B．past C．history D．life13、A．friends B．progress C．discoveries D．money14、A．health B．career C．honor D．freedom15、A．things B．condition C．people D．beauty16、A．before B．when C．unless D．since17、A．realize B．regret C．a(chǎn)pologize D．explain18、A．or B．until C．however D．but19、A．saved B．missed C．reduced D．won20、A．possible B．probable C．necessary D．suitable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）“Click!”That’sthesoundofsafety.That’sthesoundofsurvival.That’sthesoundofaseatbeltlockinginplace.Seatbeltssavelivesandthat’safact.That’swhyIdon’tdriveanywhereuntil（小題1）(I)isontight.Choosing（小題2）(wear)yourseatbeltislikechoosingbetweenlifeanddeath.Imagineyouaredrivingat100kilometersperhouror（小題3）(fast)whensomebodyaheadofyouputsonhisorherbrakessuddenly.Whatmayhappentoyou?Someonethinkthatseatbeltsare（小題4）(comfortable).Let’sjusttake（小題5）closelookatyourchoice.Youarenotwearingyourseatbelt,（小題6）youcanslideinandoutofyourseateasily.Thatsounds（小題7）alotoffun.Butyouarealsomorelikelytodieorsufferserious（小題8）(injury).Wearingaseatbeltdoesnotmakeyoucompletelysafe.Youcangetkilledor（小題9）(hurt)whilewearingyourseatbelt.Butwearingthem（小題10）(prove)tobesaferthanwithoutthem.Sowhynottakethesaferway?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）IwaspleasedtohearfromyouandIamwrittentotellyousomethingaboutthechangesinmyschool.Youareright.Greatchangeshavebeentakenplaceinmyschool.Itisnotlongerwhatitusedtobethreeyearsago,whentherewereonlyoneteachingbuildingandaplayground.Iamhappytotellyoutwonewbuildingshadbeenbuiltandareonuse.Oneofthemisanewclassroombuilding,initthereareroomsformusic,artsandcomputerteaching.Theotherisalibrary,wherethereareallkindsofbooks,newspapersandmagazines.However,myschoolisgoodequippedwithsportsfacilitiesandmusicalinstruments.Thenumberofstudentshasalsogrownfrom1,500to2,500.What’smore,wehadplantedalotoftreesandflowersinandaroundtheschool.Ibelievemyschoolbecomebetterandbetter,andIhopeyouwillvisitmyschoolagain.第二節(jié)書面表達（滿分25分）29．（25分）假定你是李華，為幫助我市外國朋友了解中國文化，你所在的英語沙龍將舉辦元宵晚會。請發(fā)一封電子郵件給你的好友Jim，簡要介紹相關情況并邀請他參加，內(nèi)容包括：1.時間：下周二晚6點到8點；2.地點：俱樂部101室；3.內(nèi)容：唱中國歌、比賽用筷子、包元宵等。注意：1．詞數(shù)100左右，信的開頭已給出，不計入總詞數(shù)。2．可適當增加細節(jié)，以使行文連貫。參考詞匯：筷子(chopsticks);元宵(sweetdumplings)DearJim,Howareyou?___________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________

參考答案第一部分（共20小題，每小題1.5分，滿分30分）1、C2、A3、A4、C5、B6、C7、D8、B9、A10、B11、C12、B13、A14、A15、A16、B17、A18、C19、C20、C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、1、177．B2、179．A3、181．B22、Imaginethatyou’relookingatyourcompany-issuedsmartphoneandyounoticeane-mailfromLinkedln:“Thesecompaniesarelookingforcandidateslikeyou!”Youaren’tnecessarilysearchingforajob,butyou’realwaysopentoopportunities,sooutofcuriosity,youclickonthelink.Afewminuteslateryourbossappearsatyourdesk.“We’venoticedthatyou’respendingmoretimeonLinkedlnlately,soIwantedtotalkwithyouaboutyourcareerandwhetheryou’rehappyhere,”shesays.Uh-oh.It’sanawkwardscene.Attrition(損耗)hasalwaysbeenexpensiveforcompanies,butinmanyindustriesthecostoflosinggoodworkersisrising,owingtotightlabormarkets.Thuscompaniesaremakinggreatereffortstopredictwhichworkersareathighriskofleavingsothatmanagerscantrytostopthem.Methodsrangefromelectronicmonitortowell-designedanalysesofemployees’socialmedialives.Someofthisworkmaybeareasontoletemployeestoquit.Ingeneral,peopleleavetheirjobsbecausetheydon’tliketheirboss,don’tseeopportunitiesforpromotionorgrowth,orareofferedahigherpay;thesereasonshaveheldsteadyforyears.NewresearchconductedbyCEB,aWashington-basedtechnologycompany,looksnotjustatwhyworkersquitbutalsoatwhen.“We’velearnedthatwhatreallyaffectspeopleistheirsenseofhowthey’redoingcomparedwithotherpeopleintheirpeergroup,orwithwheretheythoughttheywouldbeatacertainpointinlife,saysBrianKropp,whoheadsCEB’sHRpractice.“We’velearnedtofocusonmomentsthatallowpeopletomakethesecomparisons.”Technologyalsoprovidescluesaboutwhichstaremployeesmightbeeyeingth