2024剑桥雅思讲义Multiple_Choice.docx

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1、PaSSaRe2TheOriginsofPaleoanthropologyA. Paleoanthropology,asubdisciplineofanthropology,isthestudyofextinctprimates.Whilethemajorityofresearchersdoingthiskindofworkareanthropologists,paleontologists(withinthedisciplineofgeology)mayalsostudyfossilprimates.Theprimarymethodusedbypaleoanthropologistsisth

2、eanalysisoffossilremains.However,theyincreasinglyrelyonotherscientificdisciplinestogainabetterunderstandingoftheenvironmentalforcesthatplayedaroleinourevolution,aswellastheformationofthefossilrecord.Forexample,geologistsidentifyprocessesofsedimentationandfossilization,anddatefossilsandtheirassociate

3、dsedimentsusingavarietyoftechniques.Avarietyofdisciplinesareinvolvedinhelpingtoreconstructancientenvironmentsandbiologicalcommunities.Paleontologistsidentifyancientfloralandfaunalfossils.Palynologistsanalyzeparticlesinoceanandlakecores,aswellaspolleninterrestrialsedimentstodeterminethepredominantflo

4、rainagivenareaataparticulartime.Taphonomistshelpdeterminehowfossilassemblageswereformed.B. Inthe1920szRaymondDartproposedthatearlyhominins(bipedalprimates,likeourselves)foundinSouthAfricancaveshadinhabitedthosecaves.Inaddition,heinterpretedpuncturewoundsfoundinsomeoftheskullsasevidencethatthosehomin

5、insmadeandusedweaponsforhuntingandmale-maleaggression.ThetaphonomistC.K.Brainarguedinmorerecenttimesthateitherhomininsfellthroughcracksintosubterraneancavesafterhavingbeencachedintreesbyleopards,ortheirbonesweredraggedinbyrodentszsuchasporcupines,forgnawing.Wenowrealizethatwhilethoseearlymembersofou

6、rtribelikelyusedsimpletools,theywerenotbig-gamehuntersorwarmongers.C. Themostinfluentialfieldstohavecontributedtothescienceofpaleoanthropologyaregeology,biology,andarchaeology.Geologists(eventhosewhowerenotrecognizedassuch,e.g.,CharlesDarwin)areprimarilyresponsiblefortherealizationsthat(1)theearthis

7、ancient,anditformedvianaturalprocesses;(2)theearthwasoriginallycoveredwithwater,andlifebeganinthatz*primordialsea”;(3)lifeonearthoriginatedwithsimpleforms,withsomedescendentspeciesbecomingmorecomplexovertime,ascanbeseeninthefossilrecord;(4)specieschangeorgoextinctinresponsetoenvironmentalchange;(5)n

8、ewspeciesaretheresultofaportionofapopulationadaptingtoneworchangedenvironmentalconditions;(6)thesameforces,suchasvolcaniceruptions,thatoperatetodayarethosethatshapedtheearthandcausedchangesinthefossilrecordviaextinctionsandspeciationevents;and(7)layersanddepositsarecontinuallydevelopingorerodingsoth

9、atorganismsareburiedandfossilscometolight,respectively.Theideathatthesameforcesthatoperatetodayarethosethatshapedtheearthandcausedchangesinthefossilrecordistermeduniformitarianism.CharlesLyellcoinedthetermandisheraldedasthefatherofmoderngeology.HegreatlyinfluencedDarwinandthuscontributedtoDarwin,ssy

10、ntheticviewoftheevolutionoflifeonearth.Geologistsusevariousmethodstodatefossilsorfossil-containingsedimentsandhavedevelopedachronology(i.e.,atimeline)fortheearthasawhole,aswellasdepositionallayersinareaswherefossilshavebeendiscovered.D. Biologistsandgeneticistshaveplayedaroleinpalaeoanthropologyinth

11、attheyhaverefinedthetheoryofevolutionbymeansofnaturalselectionbydetermininghowtraitsareinherited.ScientistsQD国IELTSADVANTAGEfromavarietyofdisciplineshaveclassifiedtheknownspeciesoftheworldbasedonevolutionaryrelationships.E. Archaeologyhasplayedandcontinuestoplayastrongroleinpaleoanthropologyviathest

12、udyofthearchaeologicalrecord,thats,therecordofpasthumanactivityviaculturalremainsandanthropogenic(human-induced)changestotheenvironment.ThomasJeffersonhasbeenreferredtoasthefirstarchaeologist,inthathismethodsweremorescientificthanhisfellowantiquarians.Antiquarianstendedtobeafterthegoods,“withoutrega

13、rdforcarefulinterpretationofthearchaeologicalrecord.Mostwouldbeconsideredlootersbytoday/sstandards.Theytookitemsofgreatculturalandhistoricalsignificanceforpersonalormuseumcollections.Someitemshavebeenreturnedtotheircountriesoforigin,butthedamageisdonewhenthearchaeologicalrecordisdisturbedordestroyed

14、.Onceanitemhasbeenremovedfromtheareawhereitwasfound,scientistscannolongerlearnfromitscontext,forexample,fromassociatedartifactsorthelocationoftheartifactingeographicspaceandtime.FAccordingtoMerriam-WebsterOnline,thefirstknownuseoftheterm“paleoanthropologyoccurredin1916.However,theearliestpaleoanthro

15、pologistswerenotlabeledassuchandcamefromavarietyofoccupations,suchasanatomistsandphysicians.Thefirsthomininfossilsdiscoveredweretheneanderthalsinthe1800s.However;paleoanthropologistsdisagreedaboutwhetherneanderthalswereancestorsofhumansorweremodernhumans.EugeneDuboiswasthefirstpersontointentionallys

16、earchforafossilhominin.HewenttoAsiawiththesolepurposeoffindingevidencethathumansevolvedthere,aswasthereigningbeliefinWesternEurope.In1891,hediscoveredaskullcap(knownasacalotte)andfemurontheSoloRiverinTrinil7Java.This,alongwithotherdiscoveriesmadeinChinaandJavaduringthefirsthalfofthe2OthcenturyzsupportedtheAsianorigintheoryuntilRaymondDartandhiscontemporary,RobertBroom,begandiscoveringmuchmoreancientmaterialinSouthAfricanquarriesandcaves.FurtherdiscoveriesbyLouisandMaryLeake