大學(xué)英語往年六級真題

大學(xué)英語往年六級真題高校英語六級考試(又稱CET-6，全稱為“CollegeEnglishTest-6”)是由國家統(tǒng)一出題的，統(tǒng)一收費(fèi)，統(tǒng)一組織考試，用來評定應(yīng)試人英語力量的英語力量的全國性的考試。下面是我為大家整理的有關(guān)高校英語往年六級真題，盼望對你們有關(guān)心!

高校英語往年六級真題：2024年12月英語六級聽力

Recording1

HereismybabynieceSarah.HerMonisadoctorandherdadisalawyer.BythetimeSarahgoestocollege,thejobsherparentsdoaregoingtolookdramaticallydifferent.

In2024,researchersatOxfordUniversitydidastudyonthefutureofwork.Theyconcludedthatalmostoneineverytwojobshaveahighriskofbeingautomatedbymachines.Machinelearningisthetechnologythatsresponsibleformostofthisdisruption.Itsthemostpowerfulbranchofartificialintelligence.Itallowsmachinestolearnfromdataandcopysomeofthethingsthathumanscando.Mypany,Kaggle,operatesonthecuttingedgeofmachinelearning.Webringtogetherhundredsofthousandsofexpertstosolveimportantproblemsforindustryandacademia.Thisgivesusauniqueperspectiveonwhatmachinescando,whattheycantdoandwhatjobstheymightautomateorthreaten.

Machinelearningstartedmakingitswayintoindustryintheearly90’s.Itstartedwithrelativelysimpletasks.Itstartedwiththingslikeassessingcreditriskfromloanapplications,sortingthemailbyreadinghandwrittenzipcodes.Overthepastfewyears,wehavemadedramaticbreakthroughs.Machinelearningisnowcapableoffar,farmoreplextasks.In2024,Kagglechallengeditsmunitytobuildaprogramthatcouldgradehigh-schoolessays.Thewinningprogramswereabletomatchthegradesgivenbyhumanteachers.

Now,giventherightdata,machinesaregoingtooutperformhumansattaskslikethis.Ateachermightread10,000essaysovera40-yearcareer.Amachinecanreadmillionsofessayswithinminutes.Wehavenochanceofpetingagainstmachinesonfrequent,high-volumetasks.

Buttherearethingswecandothatmachinescantdo.Wheremachineshavemadeverylittleprogressisintacklingnovelsituations.Machinescanthandlethingstheyhaventseenmanytimesbefore.Thefundamentallimitationsofmachinelearningisthatitneedstolearnfromlargevolumesofpastdata.Buthumansdont.Wehavetheabilitytoconnectseeminglydifferentthreadstosolveproblemsweveneverseenbefore.

Question16:WhatdidtheresearchersatOxfordUniversityconclude?

Question17:WhatdowelearnaboutKagglepany’swinningprograms?

Question18:Whatisthefundamentallimitationofmachinelearning?

Recording2

We’vetalkedrecentlyabouttheimportanceofsustainableenergy.Wevealsotalkedaboutthedifferenttheoriesonhowthatcanbedone.Sofar,ourdiscussionshaveallbeentheoretical.NowIhaveapracticalquestionforyouall.Canyourunaonehundredandfortythousandkilogramtrainonjustthesteamgeneratedbysolarpower?Well,oneengineer,Timcouncilmanbelievesitspossible.

AndhishomecityofSacramento,Californiashouldseethetechnologiesfirsttestaspartoftheupgradingofitsrailyard.Councilman,whoisaninventorandself-proclaimedsteamvisionary,iscampaigningforanewsteamtrainthatrunswithoutanyfireandcouldrunonanexistingtenkilometerline,drawingtouristsandperhapsofferingcitymutersagreenalternativetotheircars.Councilmanwantstobuildanarrayofsolarmagnifyingmirrorsatoneendofthelinetocollectandfocusheatontowaterfilledtubes.

Thiswouldgeneratesteamthatcouldbeusedtofilltanksonasmallsteamtrainwithouttheuseoffire.Supplyingpowertotrainsinthiswaywouldoffertheshortestdistancefromwelltowheels,hesays,withtheleastamountofenergylost,accordingtoharryvalentine,aCanadianengineerwhowasresearchingmodernsteamtechnology,aspecialtankmeasuringtwobytenmeterscouldstoreoversevenhundredandfiftykilowatthoursofenergyashighpressuresteamenoughtopullatwocartrainforanhourorso.Energytodriveasteamlootivecanbestoredinothermaterialsbesideswater.

Forexample,ateamatTohokuUniversityinjapanhasstudiedmaterialsthatcanstorelargeamountsofheat.Whenhedid,thesematerialsturnedfromasolidintoaliquid,absorbingenergyastheychangephase.Theliquidismaintainedaboveitsmeltingpointuntilsteamisrequired,atwhichpointtheliquidisallowedtoturnbackintoasolid,releasingitsstoredenergy.AnotherteamatNagoyaUniversityinjapanhastestedcalciumpoundasanenergystoragematerial,heatingthischemicalpounddrivesoffcarbondioxidegas,leavingcalciumoxide.

Thegascanbestoredunderpressureinatanktorecovertheenergy.Thegasisbentbackoverthecalciumoxide.Intheory,saysValentine,thiscancreateahighenoughtemperaturetogeneratesuperheatedsteam.

Question19:Whathasthespeakerpreviouslytalkedabout?

Question20:WhatisTimCouncilmantryingtodoinSacramento?

Question21:WhathasaJapaneseresearchteamtriedtodo?

Recording3

Today’scrisisincareforolderpeopleinEnglandhastwomaincauses.First,peoplearelivinglongerwithalotmoreplexneeds.Second,theyrelyonasystemthathaslongbeenmarkedbyapoorrelationbetweennationalhealthandsocialcareservices.

Currentservicesoriginatedintwokeymeasures.TheyaretheNationalHealthServiceandthe1948NationalAssistanceAct.Thisrequiredlocalgovernmenttoprovideresidentialacmodationforolderpeopleandsupervisecarehomesrunbyindependentorganizations.Theyalsoprovidehomeandmunityservicesincludingmeals,daycentersandhomehelpersandothersubsidizedservices.TheNationalHealthServicewasfreeandwhollypubliclyprovided.Itdeliveredthebesthealthcareforall.Nosuchvisionguidedresidentialandmunitycarethough.Thecarewassubstantiallyprovidedbyvoluntaryserviceswhichworktogetherwithlocalauthoritiesastheylonghadwitheligibilitybasedonine.Today,lifeexpectancyhasrisenfrom66foramaleatbirthin1948toaround80now.Inaddition,thereisbetteroverallhealthandimprovedmedicalknowledgeincare.Thismeansanunprecedentednumberofpeoplearesurvivinglongerinconditionsrequiringex-birthsupport.Familiesprovideatleastasmuchofcareastheyeverdid.Evenso,theycanrarelywithoutsubsidizedsupportaddressseriouspersonalneeds.Careforolderpeoplefacedpersistentcriticismasthesetrendsbecameapparent.Fromtheearlynineteensixties,localauthoritieswererequiredtoplanhealthandwelfareservices.Theaimwastoenableolderpeopletoremainintheirownhomesforaslongaspossible.Butthisincreasedconcernaboutthelackofcoordinationbetweenfreehealthandpaidforsocialcare.Throughthenineteenseventies,anumberofmeasuressoughttoimprovematters.

However,atatimeoffinancialcrisis,fundingdiminishedandlittlechanged.Inthe1980s,thegovernmentcutspending.Meanwhile,preferenceforprivateoverpublicservicesmademanagementevenmoredifficult.Simultaneously,thenumberofsick,olderpeoplegrew.Governmentsemphasizedtheneedtoimproveservices.Theydidsothough,w