新课标人教版课件系列《高中英语》选修(模块）8-5.2ListeningTask1:P42Theworkonearlypeopledependsonthedatesthataregiventothebonesfound.Ifthedatesarewrong,allthedataaboutearlypeoplemayalsobewrong.SoZhouHepingisveryinterestedtofindouthowarchaeologistsmakesuretheirdatesareaccurate.1.Listentothetapeandfillthelayersinthe“waterpaperbasket”diagramontheright.2.Listentothetapeagain.Payattentiontothemethodsarchaeologistsusetodatebonesandhowthosemethodswork,thenfillinthechartbelow.YogurtpotwasterpaperusedenvelopesOrangeskinMethodHowitworks1LayersinthegroundEachlayerlooksdifferentastheyareuncovered,soyoucantellwhereonelayerstartsandanotherfinishes.Inthewastepaperbasket,themostrecentlayeris________,andolderlayerisbelowthatandthe______is___________.2RadiocarbondatingAlllivingthingshave______intheirbodies.Whentheydie,thecarbon_______ata_______rate.Themethodmeasures___________ofcarboninbonesorplantsusingradioactivityandcan______howoldtheremainsare.atthetopoldestatthebottomcarbondisappearfixedtheamountofworkoutListeningTask2:P78TheTerracottaWarriorsareoneofthegreatestChinesearchaeologicalfindsofthe20thcentury.Sincetheirdiscoveryin1974therehasbeenagreatdealofinterestintheirconstruction,function,andartisticvalue.AmandaPeterswantstofindoutmorefromherChinesefriend,thearchaeologist,ZhouLei,abouthowtopreservethem.Mainidea:____________________________________________________________________________________________________________1.Whyisthefirstproblemeasiertosolve?AThesolutionissimpleBDampcanbeeasilytreatedCIfonlyoccurswhenitishotDAnewformofchemicalprotectionhasbeeninvented2.HowdoestheterracottaarmyshowEmperorQinShihuang’spower?ATheyareallthesizeofamanBTheyareaveryimpressivesight.CTherearecopiesof8,000differentmenDArchaeologiststhinkthearmyisacopyofEmperorQinShihuang’srealarmy.3.WhatcausetheTerracottaWarriorstolosetheircolour?ASunlightandtemperaturechangesBDampandtemperaturechangesCDampandsunlightDAllofthethree4Whyisitnoteasytosolvetheproblemofthefortykindsofmould?ATheymayneeddifferentcuresBTheycannotberemovedCTherearesomanyofthemDTheygrewbeforetheexcavation
