考研考博-英語-三門峽社會管理職業(yè)學院考試押題三合一+答案詳解3

書山有路勤為徑，學海無涯苦作舟！住在富人區(qū)的她考研考博-英語-三門峽社會管理職業(yè)學院考試押題三合一+答案詳解（圖片大小可自由調整）全文為Word可編輯，若為PDF皆為盜版，請謹慎購買！第I卷一.綜合題庫-全考點押密(共120題)1.單選題

Hewasayoungmanofbarelyeighteenyears,evidentlycountry（

）,andnow,asitseemed,onhisfirstvisittotown.

問題1選項

A.broughtup

B.bred

C.grownup

D.raised

【答案】B

【解析】bringup提出，教育，養(yǎng)育；breed養(yǎng)育，培育；growup成長，長大；raise提高，養(yǎng)育，上升。countrybred為常用短語，意為：鄉(xiāng)村長大的。所以選項B正確。

2.單選題

Forcenturies,explorershaveriskedtheirlivesventuringintotheunknownforreasonsthatweretovaryingdegreeseconomicandnationalistic.ColumbuswentwesttolookforbettertraderoutestotheOrientandtopromotethegreatergloryofSpain.LewisandClarkjourneyedintotheAmericanwildernesstofindoutwhattheU.S.hadacquiredwhenitpurchasedLouisiana,andtheApolloastronautsrocketedtothemooninadramaticshowoftechnologicalmuscleduringthecoldwar.

Althoughtheirmissionsblendedcommercialandpolitical-militaryimperatives,theexplorersinvolvedallaccomplishedsomesignificantsciencebygoingwherenoscientistshadgonebefore.TodayMarsloomsashumanity’snextgreatterraincognita.Andwithdoubtfulprospectsforashort-termfinancialreturn,withthecoldwararapidlyfadingmemoryandamidagrowingemphasisoninternationalcooperationinlargespaceventures,itisclearthatimperativesotherthanprofitsornationalismwillhavetocompelhumanbeingstoleavetheirtracksontheplanet’sreddishsurface.Coulditbethatscience,whichhaslongplayedaminorroleinexploration,isatlastdestinedtotakealeadingrole?Thequestionnaturallyinvitesacoupleofothers:ArethereexperimentsthatonlyhumancoulddoonMars?Couldthoseexperimentsprovideinsightsprofoundenoughtojustifytheexpenseofsendingpeopleacrossinterplanetaryspace?

WithMarsthescientificstakesarearguablyhigherthantheyhaveeverbeen.Theissueofwhetherlifeeverexistedontheplanet,andwhetheritpersiststothisday,hasbeenhighlightedbymountingevidencethattheRedPlanetoncehadabundantstable,liquidwaterandbythecontinuingcontroversyoversuggestionsthebacterialfossilsrodetoEarthonameteorite(隕石)fromMars.AmoreconclusiveansweraboutlifeonMars,pastorpresent,wouldgiveresearchersinvaluabledataabouttherangeofconditionsunderwhichaplanetcangeneratethecomplexchemistrythatleadstolife.IfitcouldbeestablishedthatlifearoseindependentlyonMarsandEarth,thefindingwouldprovidethefirstconcretecluesinoneofthedeepestmysteriesinallofscience:theprevalenceoflifeintheuniverse.

1.Accordingtothepassage,thechiefpurposeofexploresingoingtounknownplaceinthepastwas_________________.

2.Atpresent,aprobableinducementforcountriestoinitiatelarge-scalespaceventuresis____________.

3.WhatisthemaingoalofsendinghumanmissionstoMars?

4.Bysaying“WithMarsthescientificstakesarearguablyhigherthantheyhaveeverbeen”,theauthormeansthat________________.

5.ThepassagetellsusthatproofoflifeonMarswould___________.

問題1選項

A.todisplaytheircountry’smilitarymight

B.toaccomplishsomesignificantscience

C.tofindnewareasforcolonization

D.topursuecommercialandstateinterests

問題2選項

A.internationalcooperation

B.nationalisticreasons

C.scientificresearch

D.long-termprofits

問題3選項

A.tTofindoutiflifeeverexistedthere.

B.tToseeifhumanscouldsurvivethere.

C.tToprovethefeasibilityoflarge-scalespaceventures.

D.tToshowtheleadingroleofscienceinspaceexploration.

問題4選項

A.withMarstherisksinvolvedaremuchgreaterthananypreviousspaceventures.

B.inthecaseofMars,therewardsofscientificexplorationcanbeveryhigh

C.inthecaseofMars,muchmoreresearchfundsareneededthaneverbefore

D.withMars,scientistsargue,thefundamentalinterestsofscienceareatissue

問題5選項

A.makeclearthecomplexchemistryinthedevelopmentoflife

B.confirmthesuggestionthatbacterialfossilstraveledtoEarthonameteorite

C.revealthekindofconditionsunderwhichlifeoriginates

D.provideanexplanationwhylifeiscommonintheuniverse

【答案】第1題:D

第2題:C

第3題:D

第4題:B

第5題:C

【解析】1.【試題解析】：事實細節(jié)題。根據explorersgotounknown定位到全文首句。首句中提到，幾個世紀以來，出于或多或少的經濟原因及國家主義原因，探險家冒著生命危險深入到未知領域。本題是詢問主要目的，所以reasons的定語從句中的內容即為答案“forreasonsthatweretovaryingdegreeseconomicandnationalistic”，由此可知答案為D。

2.【試題解析】:判斷推理題。題目的意思是說促使各個國家大規(guī)模的太空探險的主要誘因是什么，定位到第2段，“itisclearthatimperativesotherthanprofitsornationalismwillhavetocompelhumanbeingstoleavetheirtracksontheplanet’sreddishsurface.”可得知去太空探險是為了留下人類的痕跡也就是為了科學的探索，因此，答案為C。

3.【試題解析】:判斷推理題。根據maingoal這一個關鍵詞定位到第23段第43句。定位到原文，可得知在以往探險中一直扮演次要角色的科學這一次終于注定是主角了嗎？?說明在以往探險中，一直被認為不重要的就是科學，由此可知那么這次最重要的就是科學，因此答案為D。

4.【試題解析】:事實細節(jié)題。根據引用的這句話可以定位到原文的“AmoreconclusiveansweraboutlifeonMars,pastorpresent,wouldgiveresearchersinvaluabledataabouttherangeofconditionsunderwhichaplanetcangeneratethecomplexchemistrythatleadstolife.”可得知，這次的探險可以獲得了很多前所未有的珍貴資料，因此，答案為BA。

5.【試題解析】：事實細節(jié)題。題目詢問文章告訴我們火星上有生命的證據表明了什么，可定位到原文的最后一段“AmoreconclusiveansweraboutlifeonMars,，pastorpresent,，wouldgiveresearchersinvaluabledataabouttherangeofconditionsunderwhichaplanetcangeneratethecomplexchemistrythatleadstolife.”(（就火星上過去或現在的生命問題提供一個更具結論性的答案，將會給研究者提供寶貴的資料，使他們了解在何種條件下，一個行星體能夠產生復雜的化學反應，導致生命的出現）)，因此，答案為C。

3.單選題

Noverysatisfactoryaccountofthemechanismthatcausedtheformationoftheoceanbasinshasyetbeengiven.Thetraditionalviewsupposesthattheuppermantleoftheearthbehavesasaliquidwhenitissubjectedtosmallforcesforlongperiodsandthatdifferencesintemperatureunderoceansandcontinentsaresufficienttoproduceconvectioninthemantleoftheearthwithrisingconvectioncurrentsunderthemid-oceanridgesandsinkingcurrentsunderthecontinents.Theoretically,thisconvectionwouldcarrythecontinentalplatesalongasthoughtheywereonaconveyorbeltandwouldprovidetheforcesneededtoproducethesplitthatoccursalongtheridge.Thisviewmaybecorrect:ithastheadvantagethatthecurrentsaredrivenbytemperaturedifferencesthatthemselvesdependonthepositionofthecontinents.Suchaback-coupling,inwhichthepositionofthemovingplatehasanimpactontheforcesthatmoveit,couldproducecomplicatedandvaryingmotions.

Ontheotherhand,thetheoryisimplausiblebecauseconvectiondoesnotnormallyoccuralonglines,anditcertainlydoesnotoccuralonglinesbrokenbyfrequentoffsetsorchangesindirection,astheridgeis.AlsoitisdifficulttoseehowthetheoryappliestotheplatebetweentheMid-AtlanticRidgeandtheridgeintheIndianOcean.Thisplateisgrowingonbothsides,andsincethereisnointermediatetrench,thetworidgesmustbemovingapart.Itwouldbeoddiftherisingconvectioncurrentskeptexactpacewiththem.Analternativetheoryisthatthesinkingpartoftheplate,whichisdenserthanthehottersurroundingmantle,pullstherestoftheplateafterit.AgainitisdifficulttoseehowthisappliestotheridgeintheSouthAtlantic,whereneithertheAfricannortheAmericanplatehasasinkingpart.

Anotherpossibilityisthatthesinkingplatecoolstheneighboringmantleandproducesconvectioncurrentsthatmovetheplates.Thislasttheoryisattractivebecauseitgivessomehopeofexplainingtheenclosedseas,suchastheSeaofJapan.Theseseashaveatypicaloceanicfloor,exceptthatthefloorisoverlaidbyseveralkilometersofsediment.Theirfloorshaveprobablybeensinkingforlongperiods.Itseemspossiblethatasinkingcurrentofcooledmantlematerialontheuppersideoftheplatemightbethecauseofsuchdeepbasins.Theenclosedseasareanimportantfeatureoftheearth’ssurface,andseriouslyrequireexplanationinbecause,additiontotheenclosedseasthataredevelopingatpresentbehindislandarcs,thereareanumberofolderonesofpossiblysimilarorigin,suchastheGulfofMexico,theBlackSea,andperhapstheNorthSea.

26.Accordingtothetraditionalviewoftheoriginoftheoceanbasins,whichofthefollowingissufficienttomovethecontinentalplates?

27.Itcanbeinferredfromthepassagethat,ofthefollowing,thedeepestsedimentswouldbefoundinthe（）.

28.Accordingtothepassage,whichofthefollowingareseparatedbyaplatethatisgrowingonbothsides?

29.Theauthorrefersto"conveyerbelt"inSentence3,Paragraph1,inorderto（）.

30.Whichofthefollowingtitleswouldbestdescribethecontentofthepassage?

問題1選項

A.Increasesinsedimentationonoceanfloors.

B.Spreadingofoceantrenches.

C.Movementofmid-oceanridges.

D.Differencesintemperatureunderoceansandcontinents.

問題2選項

A.IndianOcean

B.BlackSea

C.Mid-Atlantic

D.SouthAtlantic

問題3選項

A.ThePacificOceanandtheSeaofJapan.

B.TheSouthAtlanticRidgeandtheNorthSeaRidge.

C.TheGulfofMexicoandtheSouthAtlanticRidge.

D.TheMid-AtlanticRidgeandtheIndianOceanRidge.

問題4選項

A.illustratetheeffectsofconvectioninthemantle

B.showhowtemperaturedifferencesdependonthepositionsofthecontinents

C.demonstratethelinearnatureoftheMid-AtlanticRidge

D.describethecomplicatedmotionsmadepossiblebyback-coupling

問題5選項

A.ADescriptionoftheOceansoftheWorld

B.SeveralTheoriesofOceanBasinFormation

C.TheTraditionalViewoftheOceans

D.ConvectionandOceanCurrents

【答案】第1題:D

第2題:B

第3題:D

第4題:A

第5題:B

【解析】26.細節(jié)事實題。根據題干中的traditionalview，將信息點定位為第一段第二句。Thetraditionalviewsupposesthattheuppermantleoftheearthbehavesasaliquidwhenitissubjectedtosmallforcesforlongperiodsandthatdifferencesintemperatureunderoceansandcontinentsaresufficienttoproduceconvectioninthemantleoftheearthwithrisingconvectioncurrentsunderthemid-oceanridgesandsinkingcurrentsunderthecontinents.（傳統(tǒng)觀點認為，地球上地幔長期受小力量作用時表現為液體，海洋和大陸下的溫差足以產生地幔對流，大洋中脊下對流上升，大陸下對流下降。）從而得出本題答案。

27.細節(jié)推斷題。根據題干中的sediments，將信息點定位為最后一段第三句。Theseseashaveatypicaloceanicfloor,exceptthatthefloorisoverlaidbyseveralkilometersofsediment.（這些海洋有一個典型的海底，只是海底覆蓋著幾公里長的沉積物。）通過對比答案與尾段內容，答案為尾段尾句的BlackSea。從而得出本題答案。

28.

細節(jié)事實題。根據題干中的plate,isgrowingonbothsides，將信息點定位為第二段第三句。Thisplateisgrowingonbothsides,andsincethereisnointermediatetrench,thetworidgesmustbemovingapart.此句中的this指代前一句的theMid-AtlanticRidgeandtheridgeintheIndianOcean。從而得出本題答案。

29.

語義題。根據題干的提示，將信息點定位為第一段第三句。Theoretically,thisconvectionwouldcarrythecontinentalplatesalongasthoughtheywereonaconveyorbeltandwouldprovidetheforcesneededtoproducethesplitthatoccursalongtheridge.第一段用很長的句子來描述地球表層的運動，緊接著用conveyorbelt來描述運動的結果。從而得出本題答案。

30.

主旨題。文章第一段第一句為全文的主題句，Noverysatisfactoryaccountofthemechanismthatcausedtheformationoftheoceanbasinshasyetbeengiven.（關于造成海洋盆地形成的機理，至今還沒有一個非常令人滿意的解釋。）說明文章的內容，即：關于oceanbasins形成的不同學說。從而得出本題答案。

4.問答題

Foranybusiness,thecostoftransportationisnormallythelargestsin?gleitemintheoverallcostofphysicaldistribution.Itdoesn’tnecessarily

follow,though,thatamanufacturershouldsimplypickupthecheapesta-101.

vailableformoftransportation.Manycompaniestodayusethetotalphysic-

caldistributionconcept,anapproachinvolvesmaximizingtheefficiencyof102.

physicaldistributionactivitieswhileminimizingtheircost.Often,this

meanthatthecompanywillmakecosttradeoffbetweenthevariousphysic-103.

caldistributionactivities.Forinstance,airfreightmaybemuchmoreex?pensivethanrailtransport,soanationalmanufacturermightuseair104.

freighttoshipeverythingfromasinglewarehouseandthusavoidthegreaterexpenseofmaintainingseveralwarehouses.

Whenafirmchoosesatypeoftransportation,ithastobearinmind

itsothermarketingconcern—storage,financing,sales,inventorysize,105.

andthelike.Ifthefirmcansupplyitscustomers’needsquicklyandrelia-106.

blythanitscompetitorsdo,itwillhaveavitaladvantage:soitmaybe

moreprofitableatthelongruntopayhighertransportationcosts,rather107.

thanriskingthelossoffuturesales.Inaddition,speedydeliveryiscrucial108.

insomeindustries.Amail-orderdistributorsendingfruitfromOregonto

Pennsylvanianeedthepromptnessofairfreight.Ontheotherhand,a109.

manufacturershippinglingeriefromNewYorktoMassachusettsmaybeperfectlysatisfiedbyslower(andcheaper)truckorrailtransport.110.

【答案】101.去掉up

102.involves→involving

103.mean→means

104.so→but

105.concern→concerns

106.the→a

107.at→in

108.risking→torisk

109.need→needs

110.by→with

【解析】101.語義題。pick本身就有“挑選”的意思,而picksth.up意為“拿起，舉起，獲得,加速，偶然聽到，取回，整理等”。

102.語法分析?？疾榉侵^語。此句為分句,不需要謂語,因此動詞改成現在分詞形式。

103.語法分析?？疾閯釉~時態(tài)。此處mean作謂語動詞,主語為this,因此mean應為第三人稱單數形式。

104.邏輯關系。此處是轉折關系。

105.語法分析。考查名詞的數。Concern意為“關心的事”時為可數名詞,此處為復數故加s。

106.語法分析?？疾楣谠~。這里沒有特指,所以應為不定冠詞a。

107.固定搭配。inthelongrun從長期來看

108.語義連接。前面是topay,所以此處對應的應為torisk。

109.語法分析。動詞的數。need的主語是第三人稱單數amail-orderdistributor故要加s。

110.固定搭配。besatisfiedwith對...很滿意。

5.單選題

Whenoneofmyroommatesbrokehislegduringabasketballgame,thedoctorattheclinicsaidthathecouldn’tcureit,sowehadtotakehimtothehospitalfivekilometersfromhere.

問題1選項

A.brokehislegduring

B.attheclinic

C.couldn’tcureit

D.thehospitalfivekilometersfromhere.

E.沒有問題

【答案】A

【解析】介詞誤用。During改成in。during表示“在…期間“，其強調動作的延續(xù)性，但brokehisleg是發(fā)生在某一特定時點的并無時間上持續(xù)性的動作。

6.單選題

Themayorwasaskedto（）hisspeechinordertoallowhisaudiencetoraise

questions.

問題1選項

A.constrain

B.conduct

C.condense

D.converge

【答案】C

【解析】句意：市長被要求（）講話，以便讓他的聽眾提問。A選項constrain限制；B選項conduct控制，實施；C選項condense壓縮，濃縮；D選項converge聚集。選項C符合句意。

7.單選題

TheStateCouncilwilllaydownnewrulesthataimtomakemanagementcompatiblewithinternationallyacceptedconventions.

問題1選項

A.conferences

B.conversations

C.practices

D.formations

【答案】C

【解析】考查名詞詞義辨析。句意：國務院將制定新的規(guī)則來使得管理與國際慣例一致。conference“會議”；conversation“（非正式）交談，談話”；practice“實踐，慣例”；formation“組成”。根據前面的“l(fā)aydownnewrules”可推測出劃線單詞的意思是“規(guī)則”，因此選項C符合題意。

8.單選題

10.

問題1選項

A.Shemarriedbecauseofloneliness.

B.Shemarriedamillionaire.

C.Shemarriedformoney.

D.Shemarriedforlove.

【答案】C

【解析】W:Cindyjustgotdivorced.

M:Sosoon!Shegotmarriedonlylastsummer.

W:Well,shefoundoutthatherhusbandwasnotthemillionaireshethoughthewas.

Q:WhatdoesthewomanimplyaboutCindy?

【解析】推斷題。女士說：shefoundoutthatherhusbandwasnotthemillionaireshethoughthewas，即Cindy離婚的原因是發(fā)現丈夫沒有想象得那么有錢。

9.單選題

Becausethedemandofcoaldecreased,manyminersbecame（）.

問題1選項

A.indignant

B.extraneous

C.immaterial

D.redundant

【答案】D

【解析】考查形容詞辨析。A選項indignant“憤憤不平的”；B選項extraneous“外來的；沒有關聯的”；C選項immaterial“非物質的；無形的；不重要的；非實質的”；D選項redundant“多余的，過剩的；被解雇的，失業(yè)的；冗長的”。句意：因為煤炭的需求下降，所以很多煤礦工人變得失業(yè)。結合句意，判斷出選項D正確。

10.單選題

Manymentalinstitutionsthroughoutthecountryhavebeenturnedintodumpinggroundsforthousandsofoldsterswhohavenoplaceelsetogo.Mostofthemaren’treallymentallyill.Inthejargonofthehospitalbureaucracy,theyareclassifiedas“inappropriateadmissions.”Butsincesocietyhasnothingbettertooffer,theyarelefttorotwithouthope,help,ordignity.Theusualexitisdeath.

Oftenthroughnofaultoftheirown,understaffedandovercrowdedmentalhospitalshandletheir“geriatriccases”littlebetterthancattle.Thereisarecurrentpatternofelderlypatientslockedintowardstopreventthemfromwanderingabout,givensteadydosesoftranquilizerstokeepthem“manageable”,leftdayandnightwithoutatraceofhumanwarmthorcompanionship.

Somehospitalshavewardsfullofelderly,tranquilizedpatients,bodiesbloatedfromtheirinactive,meaninglessexistences,sittinglistlesslyonhardbenchesorsprawledasleeponthefloor.Therearewomen,silentasstatues,occupyingchairsandrockersinthecorridors.Whiletheweathermaybebeautifuloutdoors,oldmenmayindifferentlyshuffleaboutageriatric“cottage”withnowheretogoandnothingtodo.

Yetmanyofthepeoplecouldberestoredtohumandignity,notbycomplicatedtherapeuticprocedures,butamongotherthings,byprovidinggoodmedicalcareandreachingoutahandofkindnesstowardsthem.

Itisestimatedthatonehalfoftheoldpeopleinstatementalhospitalstodaycouldleaveifpropercommunityresources,servicesandprogramswereavailable.Butanindifferentsocietyhasnotmadethemavailable.

1.Themainideaofthispassageisthat（）.

2.“Geriatric”inparagraph2referstopeoplewhoare（）.

3.Wemayinferthattheauthor（）.

4.Theauthorbelievesthattherealblamelieswith（）.

問題1選項

A.mostoldpeopleneedfamilycare

B.goodcarefortheelderlyiscostly

C.manyoldpeoplearelivingouttheirlastyearsinmentalinstitutions

D.oldpeopleshouldbetakenoutofdoorswhentheweatherispleasant

問題2選項

A.old

B.lonely

C.mentallyill

D.physicallysick

問題3選項

A.isindifferenttothestatusquoofthehospitals

B.issympathetictothesituationoftheelderly

C.isoptimistictowardsthefutureoftheelderly

D.ishostiletowardsthementalhospitalstaff

問題4選項

A.thesociety

B.thementalinstitutions

C.theelderly

D.thehospitalbureaucracy

【答案】第1題:C

第2題:A

第3題:B

第4題:A

【解析】1.根據文章內容可知,首段第一句為全文主旨句?！癕anymentalinstitutionsthroughoutthecountryhavebeenturnedintodumpinggroundsforthousandsofoldsterswhohavenoplaceelsetogo.”全國各地的許多精神病院已經變成了接納成千上萬沒有去處的老年人的垃圾場。選項C符合原文。

2.根據原文句意:人手不足、人滿為患的精神病院在處理“病例”時就像對待牲口一樣。上一段提到,大多數進精神病院的都是老人,并且他們沒有真正的精神疾病,也不是因為孤獨或者生病才進來的,所以“geriatric”指的是老年人。選項A正確。

3.根據最后一段的內容可知,如果有適當的社區(qū)資源、服務和項目,現在州立精神病院的老人可以離開一半。但是冷漠的社會并沒有提供這些服務。說明作者更多的是同情這些老人,選項B正確。

4.根據最后一段最后一句“Butanindifferentsocietyhasnotmadethemavailable.”但是冷漠的社會并沒有提供這些服務。說明作者認為真正的過錯在于社會,選項A正確。

11.單選題

TheEarth'satmosphererecordedthehugedeclineinthepopulationoftheWesternHemisphereinthe150yearsfollowingthearrivalofColumbusfromSpainin1492.Soldiers,officials,settlersandmerchantsfromEurasiaandslavesfromAfricaunwittinglyintroducedcommondiseasessuchassmallpox(天花)，measles(麻疹)andinfluenzatowhichtheinhabitantsoftheAmericaspossessednoimmunity.Scholarlyestimatesofthetotalnumberofdeathsfromdiseasevarywidely,butthenumbermayhaveexceeded50millionandcertainlywipedout75%ormoreofnativeAmericans.Thisrapiddepopulationofthehemisphereallowedforeststogrowinformerfarmlands.By1610thegrowthofallthosetreeshadsuckedenoughcarbondioxide(CO2)outoftheskytocauseadropofatleastsevenpartspermillioninatmosphericconcentrationsofthemostprominentgreenhousegasandstartalittleiceage.

Basedonthatdramaticshift,SimonLewisandMarkMaslin,BritishecologistsworkingatUniversityCollegeLondon,believe1610shouldbeconsideredthestartingdateofanewgeologicepochcurrentlyunderdiscussionamongearthscientists:theAnthropocene,orrecentageofhumanity.LewisandMaslindubthedecreaseinatmosphericcarbondioxidethe’’OrbisSpike"fromtheLatinforworld,becausesince1492humancivilizationhasprogressivelyglobalized.InapaperpublishedthismonthinNature,theyarguethathumanimpactsontheplanethavebeendramaticenoughtowarrantformalrecognitionoftheAnthropoceneepochandthattheOrbisSpikeshouldserveasthemarkerofitsopening.

TheAnthropoceneisnotanewidea.Asfarbackasthe18thcenturythefirstscientificattempttolayoutachronologyofEarth’sgeologichistoryendedwithahumanepoch.Bythe19thcenturytheideawascommonplace,appearingastheAnthropozoic("humanliferocks")orthe'*EraofMan"ingeologytextbooks.Butbythemiddleofthe20thcentury,theideaoftheHolocene(thetermmeans"entirelyrecent"inGreekdesignatesthemostrecentperiod,datingfrom11,700yearsago,whentheglaciers(冰河)ofthelasticeagereceded)hadcometodominate,recognizinghumansasanimportantelementofthecurrentepoch,butnotthedefiningone.

Thatideaisnolongeradequate,accordingtoscientistsrangingfromgeologiststoclimatologists.Humanimpactshavesimplygrowntoolarge:somescientistspointtothefloodofnitrogen(N)releasedintotheworldbytheinventionoftheHaber-Boschprocess

forwrestingthevitalnutrientfromtheairtosupportagriculture,othersemphasizethefactthatmodempeoplenowmovemoreearthandstonethanalltheworld’sriversputtogether.

Researchershaveadvancedanarrayofproposalsforwhenthisputativenewepochmighthavebegun.Somelinkittothestartofthemassextinctionoflargemammals（卩甫孚L動物）suchaswoollymammothsandgiantkangaroossome50,000yearsagoortheadventofagriculturearound10,000yearsago.OtherssaytheAnthropoceneismuchmorerecentandtothebeginningoftheuptickinatmosphericCO2concentrationsaftertheinventionofaneffectivecoal-burningsteamengine.

ThemostprominentcurrentproposalconnectsthedawnoftheAnthropocenetothatofthenuclearage:long-lobedradionuclide（放射性同位素）leavealong-livedrecordintherock.Theboominhumanpopulationandconsumptionofeverythingfromcoppertomaize（玉米）after1950orso,knownasthe"GreatAcceleration",roughlycoincideswiththisnuclearmarker.Sodoestheadventofplasticsandotherremnantsofindustrialsociety,dubbed”technofossils"byJanZalasiewiczoftheUniversityofLeicester,thegeologistwhoheadsthegroupthatispushingforadditionoftheAnthropocenetothestandardgeologictimescale.TheradionuclidescanthenserveaswhatgeologistscallaGlobalStratotypeSectionandPoint,morecommonlyknownasa“goldenspike.”Perhapsthemostfamoussuchgoldenspikeisthethinlayerofiridium（Ir）afoundinpockexposednearElKef,Tunisia;itpinpointstheasteroidimpactthatterminatedtheageofthedinosaursandendedtheCretaceousabout65millionyearsago.

LewisandMaslinrejectthisradionuclidespikebecauseitisnottiedtoa*'world-changingevent"--atleastnotyet—althoughitisaclearsignalintherock.Ontheotherhand,theirOrbisSpikein1610reflectsboththemostrecentCO2lowpointandtheredistributionofplantsandanimalsaroundtheworldassociatedwiththeAgeofDiscoveryandtheriseofworldempires,atruechangingoftheworld.Muchlikethegoldenspikethatmarkstheendofthedinosaurs,theproposedOrbisSpikeitselfwouldbetiedtothelowpointofatmosphericCO?concentrationsaround1610,asrecordedinicecores,wheretinytrappedbubblesbetraypastatmospheres.FurthergeologicevidencewillcomefromtheappearanceofmaizepolleninsedimentcorestakeninEuropeandAsiaatthattime,amongotherindicatorsthatwillcomplementtheCO2record.Therefore,scientistslookingaticecores,mudorevenrockwillfindthisepochalshiftinthefuture.

TheCO2dropcoincideswithwhatclimatologistscalltheLittleIceAge.Thatcoolingeventmayhavebeentiedtoregeneratedforestsandotherplantsgrowingonsome50millionhectaresoflandabandonedbyhumansafterthemassdeathbroughtonbydiseaseandwarfare,LewisandMaslinsuggest.Anditwasn'tjustthedeathofmillionsofaboriginalAmericans.Theenslavement（ordeath）ofmanymillionsofAfricansforlaborinthenewlandsmayalsohaveaddedtotheclimateimpact.ThepopulationoftheregionsofwesternAfricamostaffectedbytheNewWorldslavetradedidnotbegintorecoveruntiltheendofthe19thcentury.Inotherwords,from1600to1900areasofthatregionmayhavebeenregrowingforest,enoughtoreduceatmosphericCO?,justliketheregrowthoftheAmazonandthegreatNorthAmericanwoods,althoughthishypothesisremainsinsomedispute.

Howeverdelimited,thenewdesignationwouldmeanwearelivinginanew

Anthropoceneepoch,partoftheQuaternaryperiod,whichstartedmore2.5millionyearsagowiththeadventofthecyclicalgrowthandretreatofmassiveglaciers.TheQuaternaryispartoftheCenozoic("recentlife”)erathatbegan66millionyearsagoandis,inturn,partofthePhanerozoic("revealedlife")eon,whichstarted541millionyearsagoandencompassesallofcomplexlifethathaseverlivedonthisplanet.Intheend,theAnthropocenemightsupplanttheHolocene."Itisdesignatedanepoch,unlikeotherinterglacial,becausebackinthe18thcenturygeologiststhoughthumanswereaveryrecentspecies,arrivingviadivineinterventionorevolvingonEarthintheHolocene,*'Lewisargues,butscientistsnowknowHomosapiensarosemorethan200,000yearsagointhePleistoceneepoch."HumansareaPleistocenespecies,so...callingtheHoloceneanepochisarelicofthepast."MaslinsuggestsdowngradingtheHolocenetoastagwithinthePleistocene,likeotherinterglacialspansinthegeologicrecord.ButZalasiewiczdisagreeswiththisbidtogetridoftheHolocene.*'Idon’tseetheneed,"hesays,"systematictracingofaHolocene-Anthropoceneboundarygloballywouldbeilluminatinginallsortsofways."

1.ThescientistscitedinthisarticleagreethathumanshavebecomeamajorfactorinthehistoryofEarth.Asthearticlehighlights,whattheydisagreeonis（

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2.EuropeanpenetrationoftheNewWorldinthecenturyandahalfafter1492ledto（

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3.Thedeclineinatmosphericcarbondioxidethatreacheditslowpointinoraround1610was（

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4.ThescientifichypothesisthathumanitycanalterthehistoryofEarthinhighlysignificantways（

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5.TheOrbisSpikeproposedbyLewisandMaslinwouldbemostreliablylocatedin（

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6.Radionuclidescanbelikenedtoiridium（

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7.SomescientiststhinkthatradionuclidesarethekeytodefiningtheAnthropocenebecause（

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8.ProfessorZalasiewiczprobablyfavorsretainingthedistinctionbetweentheHoloceneandtheAnthropocenebecausetracingitsboundary（

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問題1選項

A.theextenttowhichhumansarealteringEarth.

B.preciselywhenhumanactivitybecameadefiningelementinEarth'shistory.

C.whattonametheperiodofmajorhumanimpact.

D.whenhumanactivitywillbecomethedominantfactorinchangesintheEarth.

問題2選項

A.massivedepopulation.

B.widespreadcontagiousdisease.

C.greatlyreduceduseoflandforagriculture.

D.alloftheabove.

問題3選項

A.asingular,isolatedeventthatleftadiscerniblemarkingeochronoloy.

B.thefirstofalongchainofeventsthatchangedthewayhumansinteractwithnature.

C.theresult(andsignal,asreflectedingeology)ofthefirstinasignificantsetofmodemchangesinhowhumansusepl