2026屆北京東城55中英語高三上期末達(dá)標(biāo)檢測模擬試題注意事項(xiàng)：1．答卷前，考生務(wù)必將自己的姓名、準(zhǔn)考證號、考場號和座位號填寫在試題卷和答題卡上。用2B鉛筆將試卷類型（B）填涂在答題卡相應(yīng)位置上。將條形碼粘貼在答題卡右上角"條形碼粘貼處"。2．作答選擇題時(shí)，選出每小題答案后，用2B鉛筆把答題卡上對應(yīng)題目選項(xiàng)的答案信息點(diǎn)涂黑；如需改動(dòng)，用橡皮擦干凈后，再選涂其他答案。答案不能答在試題卷上。3．非選擇題必須用黑色字跡的鋼筆或簽字筆作答，答案必須寫在答題卡各題目指定區(qū)域內(nèi)相應(yīng)位置上；如需改動(dòng)，先劃掉原來的答案，然后再寫上新答案；不準(zhǔn)使用鉛筆和涂改液。不按以上要求作答無效。4．考生必須保證答題卡的整潔。考試結(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．U.S.PresidentBarackObamaarrivedinChina’seconomiccenterShanghaionSundaynight,November15th2009,______astatevisittoChina.A．starting B．started C．tostart D．havingstarted2．AsJohnLennononcesaid,lifeis________happenstoyouwhileyouarebusymakingotherplans.A．Which B．thatC．what D．where3．—Ilikeyournewshoes!—Thanks.Ihadtotryonalmostadozenpairs_________Idecidedtogetthem.A．a(chǎn)s B．whenC．a(chǎn)fter D．before4．Wecompletedonethirdoftheproject,andtheloan_______inplace,wehadtodelaytheresttillthenextmonth.A．notarranged B．wasnotarrangedC．notarranging D．hadnotbeenarranged5．Theinfrastructureprojecthasconsumedsomuchmoneythatwecan'tfindanyfinancialsupportandhaveto______.A．pullout B．pullthroughC．catchup D．catchon6．Thatchildren______meetwithsetbacksisamatterofnecessityasthey_____,soparentsdon’tworryaboutthat.A．shall;grewup B．must；grewup C．can;growup D．will;growup7．Theinnerstrengthofthegirlallowsher_____goingwhenshegetsintotrouble.A．keepB．keepingC．tokeepD．kept8．SomewarnedthatthesteptheUSgovernmenthastakentocopewiththecurrentcrisisis________muchrisk.A．oneof B．theoneof C．theone D．thatone9．Mark______havehurried.Afterdrivingattopspeed,hearrivedhalfanhourearly.A．needn’t B．wouldn’t C．mustn’t D．couldn’t10．TheladystandingovertheremaybefromtheUSA,_____Iguesshaslostherway.A．whom B．whoC．which D．where11．—Whathappenedtotheyoungtreesweplantedlastweek?—Thetrees__________well,butIdidn’twaterthem.A．mightgrow B．wouldhavegrownC．needn’thavegrown D．wouldgrow12．．Whenhegoesout,heoftenwearssunglasses_______nobodycanrecognizehim．A．sothat B．nowthat C．incase D．a(chǎn)sthough13．--Hello，________________--Oh，sorry.I'vegotthewrongnumber.A．Dr.Brown'soffice. B．Who'sthatspeaking？C．CanIhelpyou？ D．IsthatDr.Brown？14．—Howwouldyoulikeyourtea?—_____.A．VeryquicklyB．Asitcomes,pleaseC．VerymuchD．Idon’tliketea15．Thereisawide________ofreferencebookstobefound,so________youlookforsomematerialneeded,youcanturntome.A．kind;thelasttime B．sort;everytimeC．variety;nexttime D．type;themoment16．Oursocietywouldbebetteroffbutforthefactthattheeconomy________bythecurrentglobalfinancialcrisis.A．hadbeenaffected B．wereaffectedC．shouldbeaffected D．isaffected17．Rosa_____thiswashingmachineformorethantenyears.Sheisthinkingaboutbuyinganewone.A．isusingB．usedC．hadusedD．hasbeenusing18．Sincemanyformerdrugabusershavepsychologicalproblems,theyoftenneedsupportgroups_________theycantalkabouttheirstrugglesandfindnewwaystomanageintheworld.A．which B．whatC．where D．when19．---Whereistheplane？Ican'tseeit.---Itwentoffits________________tokeepawayfromthesuddenstorm.A．course B．roadC．flight D．direction20．－Whatiftherainstormcontinues?－Comeonguys!Wehavetomeetthe_______whatevertheweather.A．standard B．demandC．deadline D．satisfaction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(gè)選項(xiàng)中，選出最佳選項(xiàng)。21．（6分）Abitefromatsetseflyisanextremelyunpleasantexperience.Tomakemattersworse,severalspeciesoftsetseflycantransmitdiseases.Oneofthemostdangerousisaparasite(寄生蟲)thatcauses"sleepingsickness".Aftertheinitialbite,sleepingsicknesssymptomsoftenstartwithafever,headachesandachingmuscles.Astheillnessgoeson,thoseinfectedbecomeincreasinglytired,whichiswhereitgetsitsname.Itisworthnotingthatsleepingsicknessisnolongerasdeadlyasitoncewas.Intheearly20thCenturyseveralhundredthousandpeoplewereinfectedeachyear.Bythe1960sthediseasewasconsidered"undercontrol"andhadreachedverylownumbers,makingitsspreadmoredifficult.Butinthe1970stherewasanothermajorinfection,whichtook20yearstocontrol.Sincethen,betterscreeningprogramsandearliertreatmentshavereducedthenumberofcasesdramatically.In2000thisfiguredroppedtofewerthan3,000.TheWorldHealthOrganization(WHO)hopesthediseasewillbecompletelyremovedby2020.Moreproblematically,aseriesofnewstudieshaveshownthattheparasiteismorecomplicatedthanpreviouslybelieved.Sleepingsicknesshasalwaysbeenconsidered—andanalyzed—asablooddisease,becausetheparasitescanreadilybediscoveredinthebloodofitsvictims.However,inarecentstudyfoundthattheparasitecanstayintheskinandfat,aswellasintheblood.Theremayevenbeahigherdensity（密度）oftheparasiteintheskinthanintheblood.Thatmeansapersoncanhavenosymptomsbutstillbothharborthediseaseandspreadit.Thefindingcouldexplainthemysterious1970sinfection,andwhythediseasecanspringupinareasthathadpreviouslybeencleared.1、What'sthedangerofatsetseflybite?A．Itmakespeoplesleepy.B．Itcausesskindisease.C．Itbringsaboutdeaths.D．Ittransmitsdeadlyparasites.2、WhatcanweinferaboutsleepingsicknessfromParagraph3?A．It'sstillathreattohumanhealth.B．It'snotthatdangerousatpresent.C．It'sincurableintheearly20thcentury.D．It'scompletelyundercontrolinthe1960s.3、Whatdoestheunderlined"harbor"mostprobablymean?A．carryB．resistC．exchangeD．hide4、Whatdoesthelatestresearchindicateaccordingtothepassage?A．Sleepingsicknessisablooddisease.B．Skinismoresuitablefortheparasitetogrow.C．Sleepingsicknesscanbespreadwithnosigns.D．Parasitesintheskincausedthe1970sinfection.22．（8分）Google,oneoftheworld’soutstandingtechcompanies,wasattacked.Itwasn’titssearchenginethatwasattackedoritsadvertisingplatformorevenitssocialnetwork.Google+.Instead,itwasabuilding.Twowebsecurityexpertshacked(侵入)intoitsWharf7officeinSydney,Australia,throughGoogle’sbuildingmanagementsystem(BMS).Oneofthem,BillyRios,says,“MycolleagueandIhavelotofexperienceinwebsecurity,butitisnotsomethingthatpeoplecouldn’tlearn.Onceyouunderstandhowthesystemworks,itisverysimple.”TheyfoundthesystemonShodan,asearchenginethatlistsdevicesconnectedtotheInternet,andthenranitthroughtheirownsoftwaretoidentifywhoownedthebuilding.InthecaseoftheGooglehacking,theresearchershadnoimmoralpurposeandjustinformedGoogleaboutwhattheyfound.AccordingtoMrRios,whorunssecuritycompanyWhitescope,thereare50,000buildingscurrentlyconnectedtotheInternet,includingresearchinstitutes,churchesandhospitals,and2,000ofthoseareonlinewithpasswordprotection,MartynThomas,aprofessorofITatGreshamCollegeintheUK,says,“Itisbeyonddoubtthatattemptstoattackbuildingmanagementsystemsarehappeningallthetime.”Makingabuildingsmartgenerallymeansconnectingthesystemsthatcontrolheating,lightingandsecuritytotheInternetandthewidercorporatenetwork.Therewasastrongreasonfordoingthis,saidAndrewKelly,principalsecurityconsultantatdefencecompanyQinetiq.“Energysavingsarethebiggestfactorinconnectingbuildingmanagementsystemstothecorporatenetwork,”hesays.“Itgivesthosewhorunthebuildingbettercontrolandoffersbetween20%to50%inenergysavings,”headds.Butitalsomakesthemlesssecure.AndifanyofthesefeelslikeaHollywoodfilm,thinkagain.1、HowdidBillyRiosandhiscolleaguehackGoogle’sbuilding?A．TheyinventedasearchengineandconnectedittoGoogle’sbuilding.B．TheyworkedforGoogleandmasteredhowthebuildingworked.C．TheyusedGoogle’sBMStofindouttheownerofthebuilding,D．TheyconnectedtheirownsoftwaretothebuildingtorunGoogle.2、InthecaseoftheGooglehacking,theresearchershadtheintentionof________.A．a(chǎn)nalyzingsomeimmoralproblemsB．explainingthereasonsforenergysavingsC．enteringGoogle’sbuildingtosavemoreenergyD．tellingGoogleabouttheWharf7office’shiddendanger3、What’sthemainideaofParagraph4?A．Thebuildingmanagementsystemsofsomebuildingsareindanger.B．Therearemanyresearcherscontributingalottowebsecurity.C．Theattackonbuildingmanagementsystemshappensallovertheworld.D．TherearetoomanybuildingsconnectedtotheInternettobemanagedwell.4、Whatistheauthor’sattitudetowardsthewayoftheenergysavingsofsomebuildings?A．Ambiguous.B．Negative.C．Indifferent.D．Favorable.23．（8分）Englandcontinuestobeoneofthemostpopulartouristdestinationsintheworld.Londoninparticularisoneofthemostvisitedcitiesanddrawspeopleinwithitsappeal,history,andpubs.England’ssmallercities,likeBathandOxford,areequallyasattractivewithalotofcultureandfewercrowds.Liverpool,birthplaceofTheBeatles,hasarichmusicalhistory.Thecountrysidehaswonderfulnaturalbeauty.HerearesometipsontravelinginEngland.Freemuseums—PublicmuseumsofferfreeadmissionineverycitythroughoutEnglandandtheUK.It’sagreatwaytolearnaboutthecountry’smostinfluentialartistsandhistory,andspendarainydaywithoutpayingacent.Bookearly—Bookalltransportationwellinadvance,evenifyoudon’tplantouseit.Farescanbearound￡2withalittleplanning.TheMegabusnotonlyrunsbusesbutalsoprovidestrainsthroughoutEnglandandisthebestchoiceforcheaptravelthroughoutthecountry.Pubfood—EatinginEnglandcanbequiteexpensive,butforgoodcheapandfillingmeals,visitthelocalpubs,whereyoucangetagoodmealforlessthan￡10.Besides,thepubsareagreatwaytomeetpeople!GetaTasteofUKcard—TheTasteoftheUKcardoffersupto50%offatselectedrestaurants.Youdon’tneedtobeanEnglishtogetthecard,andyouneedn’tpaythefirstmonth’smembershipfee,whichisperfectformosttravelers.Takeafreewalkingtour—ManymajorcitiesinEnglandofferfreewalkingtours.Theyusuallylastafewhoursandareagreatwaytoseethecity.1、ComparedwithLondon,Oxfordis.A．moreappealingB．lesscrowdedC．largerinsizeD．richerinhistory2、Whyiseatinginlocalpubssuggested?A．Thepriceoffoodislowthere.B．Thechanceofmeetingstarsishighthere.C．Theserviceisexcellentthere.D．Thediningatmosphereisperfectthere.3、Whatcanbeknownfromthetext?A．AllmuseumsintheUKarefreeofcharge.B．ThebestwaytotravelaroundEnglandisbybus.C．FreewalkingtoursareavailableinonlysomecitiesinEngland.D．HoldersoftheTasteofUKcardcanenjoydiscountsatallrestaurants.24．（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．Goodmannersinspirepeopletocareaboutoneanother25．（10分）Theymaybeteenagers,but17-year-oldBrittanyBulland16-year-oldSesamMngqengqiswahavegrandambitions(雄心)—tolaunchAfrica’sfirstprivatesatellite(衛(wèi)星)intospace.TheyarepartofateamofhighschoolgirlsfromCapeTown,SouthAfrica,whohavedesignedandbuiltequipmentforasatellitethatwillorbitovertheearth’spolesscanningAfrica’ssurface.Onceinspace,thesatellitewillcollectinformationonagriculture,andfoodsecuritywithinthecontinent.Usingthedata/wecantrytodetermineandpredict(預(yù)測)theproblemsAfricawillbefacinginthefuture”,explainsBull,astudentatPelicanParkHighSchool.“Whereourfoodisgrowing,wherewecanplantmoretreesandvegetationandalsohowwecanmonitorremoteareas,”shesays.“Wehavealotofforestfiresandfloodsbutwedon’talwaysgetoutthereintime.’’Informationreceivedtwiceadaywillgotowardsdisasterprevention.It’spartofaprojectbySouthAfrica’sMetaEconomicDevelopmentOrganization(MEDO)workingwithMoreheadStateUniversityintheUS.Thegirls(14intotal)arebeingtrainedbysatelliteengineersfromCapePeninsulaUniversityofTechnology,inanefforttoencouragemoreAfricanwomenintoSTEM(science,technology,engineering,mathematics).ScheduledtolaunchinMay2017,ifsuccessful,itwillmakeMEDOthefirstprivatecompanyinAfricatobuildasatelliteandsenditintoorbit.Mngqengqiswacomesfromasingleparenthousehold.Hermotherisadomesticworker.Bybecomingaspaceengineerorastronaut,theteenagerhopestomakehermotherproud.“DiscoveringspaceandseeingtheEarth’satmosphere,it’snotsomethingmanyblackAfricanshavebeenabletodo,orgettheopportunitytolookatIwanttoseeandexperiencethesethingsformyself,”saysMngqengqiswa.HerteammateBullagrees,“Iwanttoshowtofellowgirlsthatwedon’tneedtositaroundorlimitourselves.Anycareerispossible-evenaerospace.”1、WhatdoesParagraph2mainlytalkabout?A．Informationprovidedbythesatellite.B．Thebenefitsbroughtbythesatellite.C．ProblemsAfricanagriculturefaces.D．Thewaythesatellitecollectsinformation.2、Whyaretheexpertsteachingthegirlssatellitetechnology?A．Toturnthemintogoodfarmers.B．TohelpAfricanwomentolivebetter.C．Totrainemployeesforaprivatecompany.D．ToattractmoreAfricanwomentosci-techfields.3、Whatdoyouthinkofthegirlsinthetext?A．Ambitiousandpioneering.B．Generousandstrict.C．Independentandmodest.D．Braveandserious.第三部分語言知識(shí)運(yùn)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(gè)選項(xiàng)中，選出可以填入空白處的最佳選項(xiàng)．26．（30分）閱讀下面短文，掌握其大意，然后從16-35各題所給的A、B、C、D四個(gè)選項(xiàng)中，選出最佳選項(xiàng)。Shealwaysworeaflowerinherhair．MostlyIthoughtitlooked1．Aflowertowork?Butnoonequestionedtheyoungwomanwhyaflower2hertoworkeachday．Infact,weprobablywouldhavebeenmorecuriousifshehad3withoutit．Shedidsooneday4shedeliveredaprojecttomyoffice．“I5thereisnoflowerinyourhairtoday,"Isaid6．"I'msousedtoseeingyouwearone7italmostseemsasifsomethingis8．”“Oh,yes,"sherepliedquietly,inarathersadvoice．Thiswasfarfromher_24_brightpersonality．Iknewlhadquestionedsomething9thanalostflower．“Todayistheanniversaryofmymother'sdeath．I10hersomuchthatI'mverysad．WhenIwasalittlegirl,mymotherwouldoften11flowersinmyhair．ButwhenIwas15shediedofcancer．I'vejustalwayswornaflowerinmyhairsincethenand12mademefeelasthoughshe13withme．Today,however,Ithinkshewouldlikea14thatIambecomingself-dependent,aftertenyearsofherdeath．Anditseemsthatitistheflowerthathasto15．”Shemetmyeyesandthensmiledsadly．“Ineedn'twearaflowertobe16ofher．Itwasjustanoutwardsignofmytreasured17they'restillthereevenwiththeflowergone…Oh,here'sthe18Ihopeitmeetswithyouragreement．"She19metheneatlyprepareddocument,signedwithahand-drawnflowerbelowhername．1、A．stupidB．childishC．strangeD．ugly2、A．a(chǎn)ccompaniedB．broughtC．a(chǎn)llowedD．encouraged3、A．shownupB．goneupC．jumpedupD．dressedup4、A．beforeB．a(chǎn)fterC．whenD．until5、A．senseB．discoverC．doubtD．notice6、A．freelyB．firmlyC．calmlyD．worriedly7、A．a(chǎn)sB．thatC．whichD．what8、A．missingB．goingC．happeningD．changing9、A．normalB．generalC．commonD．usual10、A．prettierB．betterC．biggerD．earlier11、A．a(chǎn)ppreciateB．wantC．respectD．miss12、A．putB．sentC．handedD．took13、A．thisB．itC．a(chǎn)tD．one14、A．stayedB．studiedC．workedD．slept15、A．wordB．signC．patternD．model16、A．meltB．dieC．goD．pass17、A．informedB．remindedC．toldD．remembered18、A．impressionsB．memoriesC．secretsD．wishes19、A．storyB．endingC．projectD．gift20、A．lentB．sentC．postedD．handed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(gè)適當(dāng)?shù)膯卧~或括號內(nèi)單詞的正確形式。27．（15分）Wecouldlearnvocabularywhileweareasleep.Researchersshoweditispossible1．(learn)newinformationwhilesleepingdeeply,andrecallthisinformationlater.Theydidteststosee2．a(chǎn)personcouldremembernewwordsandtheirtranslationswhilesleeping.Theanswerisyes.Thelanguageareasofthebrainremembervocabularyduringsleep,especiallyduringdeepsleep.Whilesleeping,ourbrainswitchesonforabouthalfasecondandthenswitches3．forhalfasecond.Theactivestate4．(call)“up-state”.Thisishowourbraincouldlearnnewvocabulary.第四部分寫作（共兩節(jié)）第一節(jié)短文改錯(cuò)（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(cuò)誤，每句中最多有兩處。錯(cuò)誤涉及一個(gè)單詞的增加、刪除或修改。增加：在缺詞處加一個(gè)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(cuò)的詞下畫一橫線，并在該詞下面寫出修改后的詞。注意：1、每處錯(cuò)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(jì)分。DearMr、Johnson,I’velearnedfromanewspaperthatsomeclerksarewantinginyourcompany、Iameagertobeingoneofthem、SoIamwritingtheletter、MynameiszhangHua、IwasbornintheHebeiProvinceandIamingoodhealth、I’vejustgraduatedintheComputerDepartmentofWuhanUniversity、IdidverygoodinallsubjectsandIamspecialgoodatcomputerstudiesandEnglish、IcanreadsciencebooksinEnglishanddoingsomewritinginEnglishaswell、Beside,IknowalittleFrench、Andinmysparetime,Ienjoyplayingbasketball、AsissaidthatyourcompanyisveryfamousandI’llverygladifyouletmeworkforit、MytelephonenumberiIamlookingforwardtohearingfromyousoon、第二節(jié)書面表達(dá)（滿分25分）29．（25分）假如你是李華，你校外教Mr．Johnson打算在中國過春節(jié)．請你用英文給他寫一封電子郵件，內(nèi)容包括：1．邀請他與你共度春節(jié)；2．介紹過春節(jié)的活動(dòng)，如吃團(tuán)圓飯，放煙花，剪紙等；3．表達(dá)期待和祝愿．注意：1．詞數(shù)100左右；2．可以適當(dāng)增加細(xì)節(jié)，以使行文連貫．參考詞匯：家庭團(tuán)聚afamilyreunion煙花firework剪紙paper-cuttingMr．Johnson，____________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________Yours，LiHua

參考答案第一部分（共20小題，每小題1.5分，滿分30分）1、A2、C3、D4、A5、A6、D7、C8、A9、A10、B11、B12、A13、A14、B15、C16、D17、D18、C19、A20、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(gè)選項(xiàng)中，選出最佳選項(xiàng)。21、1、C2、D3、A4、D22、1、C2、D3、A4、B23、1、B2、A3、C24、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.”Technologyalsoprovidescluesaboutwhichstaremployeesmightbeeyeingtheexit.Companiescantellwhetheremployeesusingworkcomputersorphonesarespendingtimeon(orevenjustopeninge-mailsfrom)careerwebsites,andresearchshowsthatmorefirmsarepayingattentiontothesethings.Largecompanieshavealsobegunsearchingforbadgeswipes(瀏覽痕跡)----employees’useofanIDtoenterandexitthebuildingortheparkinggarag