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ID:8631440
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时间:2018-04-03
《高中英语 unit 5 meeting your ancestors listening练习 新人教版选修8》由会员上传分享,免费在线阅读,更多相关内容在教育资源-天天文库。
1、UsingLanguageDATINGMETHODSZhouHeping(ZH)hascometoaskthearchaeologist,RichardLeakey(RL),howhedatestheboneshefinds.ListentoPart1.Listenagainandfillintheblanks.ZH:Howcanyoutellhowold______arewhenyoufindthem?RL:Thereare____mainways:thefirstusesthelayersinthegroundandthe______usesr
2、adiocarbondating.ZH:Isee.Howdoesthelayermethod____?RL:Well,lookatthediagraminyourbook.Thinkofawastepaper______.Whenyoucameintowork,youateanorangeandthrewtheorange_____intoit.That’slayernumber1.Latersomebody______someyogurtpotsintoit.That’slayernumber2.ZH:Ohyes,andthenIthrewsom
3、epaperintoit.Sothat’slayernumber3.RL:Yes,and______someonethrewawaysomeusedenvelopes.Sohow______layersarethereinthiswastepaperbasket?ZH:Thereare______.RL:Whichlayeristhe____andthereforethe_______?ZH:Theorangeskin.RL:Andwhichisthe_____andthereforethemost_______?ZH:Ofcourse–theus
4、ed_________.Iseehowitworksnow.Buthowdoesithelp?RL:Well,layersofsoilare__________atdifferenttimeslikethelayersinyourwastepaperbasket._____timepeoplelivesomewhere,theymakealayerinthesoil.Iftheylivetherefora_____time,theymakealotoflayers.Eachlayerhasadifferent_______andtexturewhi
5、chweusetofindout____olditis.ZH:Howsplendid!ListentoPart2.Listenagainandfillintheblanks.ZH:Nowwhataboutradiocarbon______?RL:Thisismore________.Itusesradioactivitytomeasuretheamountofcarboninlivingthings.Thecarboninadeadbody___________atafixedrate.Weknowhowlongthattakes,sowecan_
6、______theamountofcarbonandworkouthowoldaboneis.ZH:That'sveryclever.Isit________too?RL:Therearesomeproblemswithveryoldbones,soyouarealwaysgiven____dates.ZH:Howdoesthatwork?RL:Well,thedateforabonemaybebetween_____yearsand______yearsold.ZH:Isee!HowoldarethebonesintheZhoukoudian__
7、____?RL:Theyarebetween________and________yearsold.ZH:Perhapswecouldvisitthe_____togethersometime?RL:Ofcourse.Wheneveryoulike!Workbook-ListeningMORENEWSABOUTTHETERRACOTTAWARRIORSAmandaPeters(AP)wantstofindoutabouthowtopreservetheterracottawarriorsfromherChinesefriend,ZhouLei(ZL
8、),anarchaeologist.Listenagainandfillintheblanks.AP:Wheredidyo
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