高中英语人教选修8课件Unit5.docx
- 文档编号:914357
- 上传时间:2022-10-13
- 格式:DOCX
- 页数:4
- 大小:113.85KB
高中英语人教选修8课件Unit5.docx
《高中英语人教选修8课件Unit5.docx》由会员分享,可在线阅读,更多相关《高中英语人教选修8课件Unit5.docx(4页珍藏版)》请在冰豆网上搜索。
高中英语人教选修8课件Unit5
成才之路・英语
人教版・选修8(通用本)
LUnits
Meetingyourancestors
■“Around500,000yearsago,atthePekingManSiteatZhoukoudianinBeijing'ssuburbanFangshandistrict,whichisabout50kmfromthecityofBeijing,therelivedearlyhumanbeings,”saysaChinahistorytextbook.
■Thetextbooknowhastoberevised.NewdatingtechniquessuggesttheremainsofPekingMan-foundinthe1920s-areover200,000yearsolderthanpreviouslythought.What'simportantaboutthatdate,about770,000yearsago,isthatthiswas
■OverEarth'slonghistory,therehavebeenanumberoftimeswheniceandsnowcoveredalargepartofitssurface.Suchperiodsareknownasiceages.
■Earthisinaniceagenow.Itstartedabout2millionyearsago.Despitethemanywarmperiodssincethen,scientistsregardthewholetimeasoneiceagebecauseofthecontinuousexistenceofatleastonelargeicesheet-theoneoverAntarctica.
■ThenewdiscoverywasmadebyChineseandUSscientists.ItsuggestsPekingManisprobablyouroldestcoldweatherhumanbeing,saidDarrylGranger,anatmospheric
scientistatPurdueUniversitywhose
researchappe ■TheaverageyearlytemperatureatthetimeinthatpartofChinawasaroundthefreezingmark,butitwastoodryforanicesheet,Grangersaid. ■Thisraisesaquestion.HowdidPekingMansurvivethecoldweather? ■RickPotts,aSmithsonianInstitutionhumanoriginsexpertwhowasn'tinvolvedintheresearch,raisedthreepossibilities: ■First,fire.EarlyfindingsshowedsignsofafireinPekingMan'scave.Buttherehasbeendebateaboutwhetherthefirewas ■Second,fur.ThereisnoevidencethatPekingManusedsimpletoolstomakemoreformfittingclothes.It'smorelikelyheworeanimalfur. ■Last,hemayhavedevelopedgraduallytohandlethecold.PekingManmayhaveexperiencedphysiologicalchangesthatallowedmorebloodtoflowtohishandsandlegs,Pottssaid.“Peopleingeneralwholiveincolderclimatestendtobeshorterandwider,”heexplained. ■UnlikethetimesofPekingMan,todaytheglobaltemperatureisrisingduetothegreenhouseeffect.Inthefuture,couldhumansdeveloptohandlethewarmthjustasPekingMandidtofightthecold? ■最新研究发现北京人的年代应该是处于冰河世纪,比我们原先的估计早二十多万年。 ■1•Accordingtothenewresearch,Peking Manactuallydatesbackto. ■A.around500,000yearsago ■B.over200,000yearsago ■C.about770,000yearsago ■D.about2millionyearsago ■答案: C细节理解题。 由第二段最后一句话“What'simportantaboutthatdete,about770,000yearsago,isthatthiswasaniceageonEarth.〃可矢口。 ■2.Whatisthemostimportantstandardforscientiststodecideaniceage? ■A.Theweatherconditions. ■B.Thecontinuousexistenceofanylargeicesheets. ■C.Theaverageyearlytemperature. ■D.Thelongperiodofsnowfall. ■答案: B推理判断题。 由第四段第三句话"...scientistsregardthewholetimeasoneiceagebecauseofthecontinuousexistenceofatleastonelargeicesheet-theoneover ■3.WhichofthefollowingisTRUEofPekingMan? ■A.Heistheoldesthumanbeing. ■B.Heusedfiretokeepwarm. ■C.Heworeformfittingclothesmadefromfurwithsimpletools. ■D.Hemighthavebeenshorterandwiderthanpreviouslythought. 蠱答案: D细节理解题。 由倒数第二段; “Peopleingeneralwholiveincolderclimatestendtobeshorterandwider〃可推牟仃一卄亩人台耳卜匕珏们百*帝亜锤日虹 ■4.Whatdoesthepassagemainlywanttoconveytous? ■A.ThelatestdiscoveryaboutPekingMan. ■B.ThelifeofPekingManduringiceage. ■C.ThewaythePekingManusetofightagainstcoldness. ■D.ThetimethePekingMandatefrom. ■答案: A主旨大意题。 本文是报道类文章 第二段第一句即点明了本文的中心一北京人的年代应该是处于冰河世纪,比我们原先砧丄曰一丄仝+仁 ■5.Thepassagecanprobablybefoundin ■A.ahistorytextbook ■B.ascientificmagazine ■C.aresearchreport ■D.anentertainmentnewspaper ■答案: B推理判断题。 本文主要介绍了最新的发现,最应该岀现的地方是科学杂志,故选B项。
- 配套讲稿:
如PPT文件的首页显示word图标,表示该PPT已包含配套word讲稿。双击word图标可打开word文档。
- 特殊限制:
部分文档作品中含有的国旗、国徽等图片,仅作为作品整体效果示例展示,禁止商用。设计者仅对作品中独创性部分享有著作权。
- 关 键 词:
- 高中英语 选修 课件 Unit5