2018年6月四級(jí)真題一及答案

201806cet4test1PartIWriting(30minutes)Directions:Forthispart,youareallowed30minutestowriteashortessayontheimportanceofreadingabilityandhowtodevelopit.Youshouldwriteatleast120wordsbutnomorethan180words.PartIIListeningComprehension(25minutes)SectionADirections:Inthissection,youwillhearthreenewsreports.Attheendofeachnewsreport,youwillheartwoorthreequestions.Boththenewsreportandthequestionswillbespokenonlyonce.Afteryouhearaquestion,youmustchoosethebestanswerfromthefourchoicesmarkedA),B),C)andD).ThenmarkthecorrespondingletteronAnswerSheet1withasinglelinethroughthecentre.Questions1and2arebasedonthenewsreportyouhavejustheard.1.A)Thereturnofabottledmessagetoitsowner'sdaughter.B)ANewHampshireman'sjokewithfriendsonhiswife.C)Afather'smessageforhisdaughter.D)Thehistoryofacentury-oldmotel.2.A)Shewantedtoshowgratitudeforhiskindness.B)Shewantedtohonorherfather'spromise.C)Shehadbeenaskedbyherfathertodoso.D)Shewasexcitedtoseeherfather'shandwriting.Questions3and4arebasedonthenewsreportyouhavejustheard.3.A)Peoplewereconcernedaboutthenumberofbees.B)SeveralcasesofZikadiseasehadbeenidentified.C)Twomillionbeeswereinfectedwithdisease.D)Zikavirushaddestroyedsomebeefarms.4.A)Itapologizedtoitscustomers.B)Itwasforcedtokillitsbees.C)Itlostahugestockofbees.D)Itlost2.5milliondollars.Questions5to7arebasedonthenewsreportyouhavejustheard.5.A)Itstayedintheairforabouttwohours.B)Ittookoffandlandedonafootballfield.C)Itprovedtobeofhighcommercialvalue.D)Itmadeaseriesofsharpturnsinthesky.6.A)Engineeringproblems.B)Theairpollutionitproduced.C)Inadequatefunding.D)Theoppositionfromthemilitary.7.A)Itusesthelatestaviationtechnology.B)Itfliesfasterthanacommercialjet.C)Itisasafermeansoftransportation.D)Itismoreenvironmentallyfriendly.SectionBDirections:Inthissection,youwillheartwolongconversations.Attheendofeachconversation,youwillhearfourquestions.Boththeconversationandthequestionswillbespokenonlyonce.Afteryouhearaquestion,youmustchoosethebestanswerfromthefourchoicesmarkedA),B),C)andD).ThenmarkthecorrespondingletteronAnswerSheet1withasinglelinethroughthecentre.Questions8to11arebasedontheconversationyouhavejustheard.8.A)Itseemsadepressingtopic.B)Itsoundsquitealarming.C)Ithaslittleimpactonourdailylife.D)Itisgettingmoreseriousthesedays.9.A)Themandoesn'tunderstandSpanish.B)Thewomandoesn'treallylikedancing.C)Theydon'twantsomethingtoonoisy.D)Theycan'tmakeittothetheatreintime.10.A)ItwouldbemorefunwithoutMr.Whiteheadhosting.B)Ithastoomanyactstoholdtheaudience'sattention.C)Itisthemostamusingshowhehaseverwatched.D)Itisashowinappropriateforanightofcharity.11.A)Watchacomedy.B)Goandseethedance.C)Booktheticketsonline.D)Seeafilmwiththeman.Questions12to15arebasedontheconversationyouhavejustheard.12.A)Mostofherschoolmatesareyoungerthansheis.B)Shesimplyhasnoideawhatschooltotransferto.C)Therearetoomanyactivitiesforhertocopewith.D)Sheworriesshewon'tfitinasatransferstudent.13.A)Seekadvicefromseniorstudents.B)Pickupsomemeaningfulhobbies.C)Participateinafter-schoolactivities.D)Lookintowhattheschooloffers.14.A)Giveherhelpwheneversheneedsit.B)Acceptherasatransferstudent.C)Findheraccommodationoncampus.D)Introducehertoherroommates.15.A)ShehasinterestssimilartoMr.Lee's.B)ShehasbecomefriendswithCatherine.C)ShehaschosenthemajorCatherinehas.D)Shehasjusttransferredtothecollege.SectionCDirections:Inthissection,youwillhearthreepassages.Attheendofeachpassage,youwillhearthreeorfourquestions.Boththepassageandthequestionswillbespokenonlyonce.Afteryouhearaquestion,youmustchoosethebestanswerfromthefourchoicesmarkedA),B),C)andD).ThenmarkthecorrespondingletteronAnswerSheet1withasinglelinethroughthecentre.Questions16to18arebasedonthepassageyouhavejustheard.16.A)Toinvestigatehowbeingoverweightimpactsonhealth.B)Tofindoutwhichphysicaldriveisthemostpowerful.C)Todiscoverwhatmostmiceliketoeat.D)Todeterminewhatfeelingsmicehave.17.A)Whentheyarehungry.B)Whentheyarethirsty.C)Whentheysmellfood.D)Whentheywantcompany.18.A)Theysearchforfoodingroups.B)Theyareoverweightwhenfoodisplenty.C)Theyprefertobewithothermice.D)Theyenjoythecompanyofotheranimals.Questions19to21arebasedonthepassageyouhavejustheard.19.A)ItsconstructionstartedbeforeWorldWarI.B)Itsconstructioncostmorethan$40billion.C)Itisefficientlyusedfortransport.D)Itisoneofthebestintheworld.20.A)Toimprovetransportationinthecountryside.B)Tomovetroopsquicklyfromplacetoplace.C)Toenablepeopletotravelatahigherspeed.D)Tospeedupthetransportationofgoods.21.A)Inthe1970s.B)Inthe1960s.C)Inthe1950s.D)Inthe1940s.Questions22to25arebasedonthepassageyouhavejustheard.22.A)Chattingwhiledriving.B)Messagingwhiledriving.C)Drivingunderage.D)Speedingonhighways.23.A)Agadgettoholdaphoneonthesteeringwheel.B)Agadgettochargethephoneinacar.C)Adevicetocontrolthespeedofavehicle.D)Adevicetoensurepeopledrivewithbothhands.24.A)Thecarkeepsflashingitsheadlights.B)Thecarslowsdowngraduallytoahalt.C)Theyarealertedwithalightandasound.D)Theygetawarningontheirsmartphone.25.A)Installingacamera.B)Usingaconnectedapp.C)Checkingtheiremails.D)Keepingadailyrecord.PartⅢReadingComprehension(40minutes)SectionADirections:Inthissection,thereisapassagewithtenblanks.Youarerequiredtoselectonewordforeachblankfromalistofchoicesgiveninawordbankfollowingthepassage.Readthepassagethroughcarefullybeforemakingyourchoices.Eachchoiceinthebankisidentifiedbyaletter.PleasemarkthecorrespondingletterforeachitemonAnswerSheet2withasinglelinethroughthecentre.Youmaynotuseanyofthewordsinthebankmorethanonce.AnofficetoweronMillerStreetinManchesteriscompletelycoveredinsolarpanels.Theyareusedtocreatesomeoftheenergyusedbytheinsurancecompanyinside.Whenthetowerwasfirst26in1962,itwascoveredwiththinsquarestones.Thesesmallsquarestonesbecameaproblemforthebuildingandcontinuedtofalloffthefacefor40yearsuntilamajorrenovationwas27.Duringthisrenovationthebuilding'sowners,CIS,28thesolarpanelcompany,Solarcentury.Theyagreedtocovertheentirebuildinginsolarpanels.In2004,thecompletedCIStowerbecameEurope'slargest29ofverticalsolarpanels.Averticalsolarprojectonsuchalarge30hasneverbeenrepeatedsince.Coveringaskyscraperwithsolarpanelshadneverbeendonebefore,andtheCIStowerwaschosenasoneofthe"10bestgreenenergyprojects".Foralongtimeafterthisrenovationproject,itwasthetallestbuildingintheUnitedKingdom,butitwas31overtakenbytheMillbankTower.Greenbuildingslikethisaren't32cost-efficientfortheinvestor,butitdoesproducemuchlesspollutionthanthatcausedbyenergy33throughfossilfuels.Assolarpanelsget34,theworldislikelytoseemoreskyscraperscoveredinsolarpanels,collectingenergymuchliketreesdo.Imagineaworldwherebuildingthetallestskyscraperwasn'taraceof35,butratheronetocollectthemostsolarenergy.A)cheaperB)cleanerC)collectionD)competedE)constructedF)consultedG)dimensionH)discoveredI)eventuallyJ)heightK)necessarilyL)productionM)rangeN)scaleO)undertakenSectionBDirections:Inthissection,youaregoingtoreadapassagewithtenstatementsattachedtoit.Eachstatementcontainsinformationgiveninoneoftheparagraphs.Identifytheparagraphfromwhichtheinformationisderived.Youmaychooseaparagraphmorethanonce.Eachparagraphismarkedwithaletter.AnswerthequestionsbymarkingthecorrespondingletteronAnswerSheet2.SomeCollegeStudentsAreAngryThatTheyHavetoPaytoDoTheirHomeworkA)Digitallearningsystemsnowchargestudentsforaccesscodesneededtocompletecoursework,takequizzes,andturninhomework.Asuniversitiesgodigital,studentsarecomplainingofanewhittotheirfinancesthat'sreplacing—andsometimesjoining—expensivetextbooks:priceyonlineaccesscodesthatarerequiredtocompletecourseworkandsubmitassignments.B)Thecodes—whichtypicallyrangeinpricefrom$80to$155percourse—givestudentsonlineaccesstosystemsdevelopedbyeducationcompanieslikeMcGrawHillandPearson.Thesecompanies,whichlongreapedbigprofitsastextbookpublishers,haveboastedthattheirnewonlineofferings,whenpushedtostudentsthroughuniversitiestheypartnerwith,representthefutureoftheindustry.C)Butcriticssaythedigitalaccesscodesrepresentthesameprofit-seekingethos(觀念)ofthetextbookbusiness,andareevenharderforstudentstooptoutof.Whiletheycouldoncebuysecond-handtextbooks,orsharecopieswithfriends,thedigitalsystemsareessentiallyimpossibletoavoid.D)"Whenwetalkabouttheaccesscodeweseeitasthenewfaceofthetextbookmonopoly(壟斷),anewwaytolockstudentsaroundthissystem,"saidEthanSenack,thehighereducationadvocatefortheU.S.PublicInterestResearchGroup,toBuzzFeedNews."Ratherthan$250(foraprinttextbook)you'repaying$120,"saidSenack."Butbecauseit'salldigitaliteliminatestheusedbookmarketandeliminatesanysharingandbecausehomeworkandtestsarethroughanaccesscode,iteliminatesanyabilitytooptout."E)SarinaHarpet,a19-year-oldstudentatVirginiaTech,wasfacedwithatoughdilemmawhenshefirststartedcollegein2015—payrentorpaytoturninherchemistryhomework.ShetoldBuzzFeedNewsthatherfreshmanchemistryclassrequiredhertouseConnect,asystemprovidedbyMcGrawHillwherestudentscansubmithomework,takeexamsandtracktheirgrades.Butthecodetoaccesstheprogramcost$120—abigsumforHarper,whohadalreadyputdown$450fortextbooks,andhadrentdayapproaching.F)Shedecidedtowaitforhernextwork-studypaycheck,whichwastypically$150-$200,topayforthecode.Sheknewthatherchemistrygrademaytakeadiveasaresult."It'sabalancingact,"shesaid."CanIreallyaffordtheseaccesscodesnow?"Shedidn'thandinherfirsttwoassignmentsforchemistry,whichstartedheroutintheclasswithafailinggrade.G)Theaccesscodesmaybeanotherfinancialheadacheforstudents,butfortextbookbusinesses,they'rethefuture.McGrawHill,whichcontrols21%ofthehighereducationmarket,reportedinMarchthatitsdigitalcontentsalesexceededprintsalesforthefirsttimein2015.Thecompanysaidthat45%ofits$140millionrevenuein2015"wasderivedfromdigitalproducts."H)APearsonspokespersontoldBuzzFeedNewsthat"digitalmaterialsarelessexpensiveandagoodinvestment"thatoffernewfeatures,likeaudiotexts,personalizedknowledgechecksandexpertvideos.Itsdigitalcoursematerialssavestudentsupto60%comparedtotraditionalprintedtextbooks,thecompanyadded.McGrawHilldidn'trespondtoarequestforcomment,butitsCEODavidLevintoldtheFinancialTimesinAugustthat"inhighereducation,theeraoftheprintedtextbookisnowover."I)Thetextbookindustryinsiststheonlinesystemsrepresentabetterdealforstudents."Thesedigitalproductsaren'tjustmechanismsforstudentstosubmithomework,theyofferallkindsoffeatures,"DavidAnderson,theexecutivedirectorofhighereducationwiththeAssociationofAmericanPublishers,toldBuzzFeedNews."Ithelpsstudentsunderstandinawaythatyoucan'tdowithprinthomeworkassignments."J)DavidHunt,anassociateprofessorinsociologyatAugustaUniversity,whichhasrolledoutdigitaltextbooksacrossitsmathandpsychologydepartments,toldBuzzFeedNewsthatheunderstandstheutilityofusingsystemsthatrequireaccesscodes.Buthedoesn'trequirehisstudentstobuyaccesstoalearningprogramthatcontrolstheclassassignments."Itrytomakethingsasinexpensiveaspossible,"saidHunt,whousesfreedigitaltextbooksforhisclassesbutdesignshisowncurriculum."TheonlinesystemsmaymakemylifealoteasierbutIfeellikeI'mgivingupcontrol.Thediscussionsarethethingswheremyexpertisecanbenefitthestudentsmost."K)A20-year-oldjunioratGeorgiaSouthernUniversitytoldBuzzFeedNewsthatshenormallyspends$500-$600onaccesscodesforclass.Inonecase,theprofessordidn'trequirestudentstobuyatextbook,justanaccesscodetoturninhomework.Thisyearshesaidshespent$900onaccesscodestobooksandprograms."That'stwomonthsofrent,"shesaid."Youcan'tsellanyofitback.Withatraditionaltextbookyoucansellitfor$30-$50andthathelpstopayforyournewsemester'sbooks.Withanaccesscode,you'reoutofthatmoney."L)BenjaminWolverton,a19-year-oldstudentattheUniversityofSouthCarolina,toldBuzzFeedNewsthat"it'sridiculousthatafterpayingtensofthousandsintuitionwehavetopayforalltheseaccesscodestodoourhomework."Manyoftheaccesscodeshe'spurchasedhavebeenrequiredsimplytocompletehomeworkorquizzes."Oftenit'sonly10%ofyourgradeinclass."hesaid."You'repayingsomuchmoneyforsomethingthathardlyaffectsyourgrade—butifyoudidn'thaveit,itwouldaffectyourgradesenough.ItwouldbebadtostartoutataBorC."Wolvertonsaidhespent$500onaccesscodesfordigitalbooksandprogramsthissemester.M)Harper,apoultry(家禽)sciencemajor,istakingchemistryagainthisyearandhadtobuyanewaccesscodetohandinherhomework.Sherentedhereconomicsandstatisticstextbooksforabout$20each.Butheraccesscodesforhomework,whichcan'tberentedorboughtsecond-hand,werehermostexpensivepurchases:$120and$85.N)Shestillremembersthestingofherfirstexperienceskippinganassignmentduetothehighprices."Wedon'treallyhaveamissedassignmentpolicy,"shesaid."Ifyoumissit,youjustmissit.Ijustgotzerosonacoupleoffirstassignments.Imanagedtopulleverythingbackup.Butasascaredfreshmanlookingattheirgrades,it'snotfun."36.Astudent'syearlyexpensesonaccesscodesmayamounttotheirrentfortwomonths.37.Theonlineaccesscodesmaybeseenasawaytotiethestudentstothedigitalsystem.38.Ifastudenttakesacourseagain,theymayhavetobuyanewaccesscodetosubmittheirassignments.39.McGrawHillaccountsforoverone-fifthofthemarketshareofcollegetextbooks.40.Manytraditionaltextbookpublishersarenowofferingonlinedigitalproducts,whichtheybelievewillbethefutureofthepublishingbusiness.41.Onestudentcomplainedthattheynowhadtopayforaccesscodesinadditiontothehightuition.42.Digitalmaterialscancoststudentslessthanhalfthepriceoftraditionalprintedbooksaccordingtoapublisher.43.Onestudentdecidednottobuyheraccesscodeuntilshereceivedthepayforherpart-timejob.44.Onlinesystemsmaydepriveteachersofopportunitiestomakethebestuseoftheirexpertisefortheirstudents.45.Digitalaccesscodesarecriticizedbecausetheyareprofit-drivenjustlikethetextbookbusiness.SectionCDirections:Thereare2passagesinthissection.Eachpassageisfollowedbysomequestionsorunfinishedstatements.ForeachofthemtherearefourchoicesmarkedA),B),C)andD).YoushoulddecideonthebestchoiceandmarkthecorrespondingletteronAnswerSheet2withasinglelinethroughthecentre.PassageOneQuestions46and50arebasedonthefollowingpassage.Losingyourabilitytothinkandrememberisprettyscary.Weknowtheriskofdementia(癡呆癥)increaseswithage.Butifyouhavememoryslips,youprobablyneedn'tworry.Thereareprettycleardifferencesbetweensignsofdementiaandage-relatedmemoryloss.Afterage50,it'squitecommontohavetroublerememberingthenamesofpeople,placesandthingsquickly,saysDr.KirkDaffnerofBrighamandWomen'sHospitalinBoston.Thebrainagesjustliketherestofthebody.Certainpartsshrink,especiallyareasinthebrainthatareimportanttolearning,memoryandplanning.Changesinbraincellscanaffectcommunicationbetweendifferentregionsofthebrain.Andbloodflowcanbereducedasbloodvesselsnarrow.Forgettingthenameofanactorinafavoritemovie,forexample,isnothingtoworryabout.Butifyouforgettheplotofthemovieordon'trememberevenseeingit,that'sfarmoreconcerning,Daffnersays.Whenyouforgetentireexperiences,hesays,that's"aredflagthatsomethingmoreseriousmaybeinvolved."Forgettinghowtooperateafamiliarobjectlikeamicrowaveoven,orforgettinghowtodrivetothehouseofafriendyou'vevisitedmanytimesbeforecanalsobesignsofsomethinggoingwrong.Buteventhen,Daffnersays,peopleshouldn'tpanic.Therearemanythingsthatcancauseconfusionandmemoryloss,includinghealthproblemsliketemporarystoppageofbreathingduringsleep,highbloodpressure,ordepression,aswellasmedications(藥物)likeantidepressants.Youdon'thavetofigurethisoutonyourown.Daffnersuggestsgoingtoyourdoctortocheckonmedications,healthproblemsandotherissuesthatcouldbeaffectingmemory.Andthebestdefenseagainstmemorylossistotrytopreventitbybuildingupyourbrain'scognitive(認(rèn)知的)reserve,Daffnersays."Readbooks,gotomovies,takeonnewhobbiesoractivitiesthatforceonetothinkinnovelways,"hesays.Inotherwords,keepyourbrainbusyandworking.Andalsogetphysicallyactive,becauseexerciseisaknownbrainbooster.46.Whydoestheauthorsaythatoneneedn'tbeconcernedaboutmemoryslips?A)Notallofthemaresymptomsofdementia.B)Theyoccuronlyamongcertaingroupsofpeople.C)Notallofthemarerelatedtoone'sage.D)Theyarequitecommonamongfifty-year-olds.47.Whathappensaswebecomeagedaccordingtothepassage?A)Ourinteractionskillsdeteriorate.B)Somepartsofourbrainstopfunctioning.C)Communicationwithinourbrainweakens.D)Ourwholebrainstartsshrinking.48.Whichmemory-relatedsymptomshouldpeopletakeseriously?A)Totallyforgettinghowtodoone'sdailyroutines.B)Inabilitytorecalldetailsofone'slifeexperiences.C)Failuretorememberthenamesofmoviesoractors.D)Occasionallyconfusingtheaddressesofone'sfriends.49.Whatshouldpeopledowhensignsofseriousmemorylossshowup?A)Checkthebrain'scognitivereserve.B)Stopmedicationsaffectingmemory.C)Turntoaprofessionalforassistance.D)Exercisetoimprovetheirwell-being.50.WhatisDr.Daffner'sadviceforcombatingmemoryloss?A)Havingregularphysicalandmentalcheckups.B)Takingmedicinethathelpsboostone'sbrain.C)Engaginginknownmemoryrepairactivities.D)Stayingactivebothphysicallyandmentally.PassageTwoQuestions51to55arebasedonthefollowingpassage.AletterwrittenbyCharlesDarwinin1875hasbeenreturnedtotheSmithsonianInstitutionArchives(檔案館)bytheFBIafterbeingstolentwice."Werealizedinthemid-1970sthatitwasmissing,"saysEffieKapsalis,headoftheSmithsonianInsitutionArchives."Itwasnotedasmissingandlikelytakenbyanintern(實(shí)習(xí)生),fromwhattheFBIistellingus.Wordgotoutthatitwasmissingwhensomeoneaskedtoseetheletterforresearchpurposes,"andtheinternputtheletterback."Theinternlikelytooktheletteragainoncenobodywaswatchingit."Decadespassed.Finally,theFBIreceivedatipthatthestolendocumentwaslocatedveryclosetoWashington,D.C.Theirartcrimeteamrecoveredtheletterbutwereunabletopresschargesbecausethetimeoflimitationshadended.TheFBIworkedcloselywiththeArchivestodeterminethattheletterwasbothauthenticanddefinitelySmithsonian'sproperty.TheletterwaswrittenbyDarwintothankanAmericangeologist,Dr.FerdinandVandeveerHayden,forsendinghimcopiesofhisresearchintothegeologyoftheregionthatwouldbecomeYellowstoneNationalPark.Theletterisinfairlygoodcondition,inspiteofbeingoutofthecareoftrainedmuseumstaffforsolong."Itwasluckilyingoodshape,"saysKapsalis,"andwejusthavetodosomeminorthingsinordertobeabletounfoldit.Ithassomeglueonitthathascoloreditslightly,butnothingthatwillpreventusfromusingit.Afteritisrepaired,wewilltakedigitalphotosofitandthatwillbeavailableonline.Oneofourgoalsistogetitemsofhighresearchvalueorinteresttothepubliconline."Itwouldnowbedifficultforanintern,visitororathieftostealadocumentlikethis."Archivingpracticeshavechangedgreatlysincethe1970s,"saysKapsalis,"andwekeepourhighvaluedocumentsinasafethatIdon'tevenhaveaccessto."51.WhathappenedtoDarwin'sletterinthe1970s?A)ItwasrecoveredbytheFBI.B)Itwasstolenmorethanonce.C)Itwasputinthearchivesforresearchpurposes.D)ItwaspurchasedbytheSmithsonianArchives.52.WhatdidtheFBIdoaftertherecoveryoftheletter?A)Theyproveditsauthenticity.B)Theykeptitinaspecialsafe.C)Theyarrestedthesuspectimmediately.D)Theypressedcriminalchargesinvain.53.WhatisDarwin'sletterabout?A)TheevolutionofYellowstoneNationalPark.B)HiscooperationwithanAmericangeologist.C)Somegeologicalevidencesupportinghistheory.D)Hisacknowledgementofhelpfromaprofessional.54.WhatwilltheSmithsonianInstitutionArchivesdowiththeletteraccordingtoKapsalis?A)Reserveitforresearchpurposesonly.B)Turnitintoanobjectofhighinterest.C)Keepitapermanentsecret.D)Makeitavailableonline.55.WhathasthepasthalfcenturywitnessedaccordingtoKapsalis?A)Growinginterestinrareartobjects.B)Radicalchangesinarchivingpractices.C)Recoveryofvariousmissingdocuments.D)Increasesinthevalueofmuseumexhibits.PartIVTranslation(30minutes)Directions:Forthispart,youareallowed30minutestotranslateapassagefromChineseintoEnglish.YoushouldwriteyouransweronAnswerSheet2.過去，乘飛機(jī)出行對(duì)大多數(shù)中國人來說是難以想象的。如今，隨著經(jīng)濟(jì)的發(fā)展和生活水平的提高，越來越多的中國人包括許多農(nóng)民和外出務(wù)工人員都能乘飛機(jī)出行。他們可以乘飛機(jī)到達(dá)所有大城市，還有很多城市也在籌建機(jī)場。航空服務(wù)不斷改進(jìn)，而且經(jīng)常會(huì)有廉價(jià)機(jī)票。近年來，節(jié)假日期間選擇乘飛機(jī)外出旅游的人數(shù)在不斷增加。PartⅠWritingTheImportanceofReadingAbilityandHowtoDevelopItAsthemostfrequentlyusedwaytogetaccesstotheoriginalmaterial,readinghasalwaysbee