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1、LESSONTHREEACTIVATION1.Whatisyouropinion?1)Hashumanevolutionbeenanextremelylongorextremelyrapidprocess?2)Doesthehumanbraingrowtoitsnormalsizeinsideoroutsideofthemother’sbody?3)Whohasthelongestchildhood:aseal,ahuman,amonkey,achimp?4)Dowediffersignificantlyinourbodyandbrainstructurefromman
2、of20,000yearsago?2.Whatbegantomakeuswhatwearetoday?Whatnowmarkthemoresignificantdifferencesofmanfromapeslikechimps?speakingagrammaticallanguage,doinglabor,abletomakeandusetools,usingfire,walkingontwofeet,havinganakedandnotahairybody,havingamuchlargerbrain,havingsmallerteethandjawsandasma
3、llerfacebelowratherthaninfrontofthebraincase,amosthelplesschildhood3.Fillintheblanks:brain,mind,idea,head,mental1)Eventhecleverestofanimalsareinferiortohumansasfarastheir__________abilitiesareconcerned.2)Putour__________togetherandwemayhituponagood__________.3)Human__________cellsareamon
4、gthegreatestwondersnaturehaseverproduced.4)Thehuman___________hascreatedaninvisibleworldofideas,beliefs,habitsandcustoms.TEXTTHEDREAMANIMALLorenEiseleyAlmostallofwhatweknowabouthumanevolutionisconfinedtotheIceAge.Itwas,particularlytowarditsclose,atimeofgreatextinctions.Someofthehugebeast
5、swhoseintercontinentalmigrationshadlaiddownthefirstpathsalongwhichmanhadtraveled,vanishedtotallyfromtheearth.Mammoths,theTemperateZoneelephants,droppedthelastoftheirheavytusksalongtherecedingfringesoftheice.Thelong-hornedbisonuponwhoseherdsmanhadnourishedhimselfformanyalongcenturyofillit
6、eratewanderings,fadedbackintothepast.Theapewhoseculturalremnantsatthebeginningofthefirstglaciationcanscarcelybedistinguishedfromchancebitsofstonehas,bytheendingofthefourthice,becomeartistandworldrover,penetratorofthefivecontinents,andmasterofall.Itwouldappearthatwithintheverybriefperiodb
7、etweenaboutfivehundredthousandandonehundredfiftythousandyearsago,manacquiredtheessentialfeaturesofamodernbrain.Howdidthisbrainfirstcome?Howfastdiditcome?Probingamongrocksandbatteredskulls,scientistsfindthattheanswersarefew.Therearemanylivingmembersoftheprimateorder¾thator
