大学英语听说2第四单元答案.ppt

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1、Listeningin1.Workinpairs.Lookatthephotosanddiscussthequestions.ListeninginAnswersInthephotoontheleft,womenareworkingwithsewingmachinesinafactory.Thisisworkinmanufacturing.Ontheright,wecanseefarmwork:Atractorwithamechanicalliftisputtingbalesofstraw(largetightly

2、wrappedpackagesofstraw)ontoatrailerpulledbyanothertractor.Thisisworkinagriculture.2Obviouslytheyaremoredangerousthanofficejobs:Theworkersinthefactoryneedtobeverysafety-consciousbecausethemachinescancauseinjuries;onthefarm,thetractorsandothermachinescanals

3、obedangerous.ListeninginAnswers3Inmostplacesithasimprovedenormously:Peoplearemuchmoresafety-consciousandawareofhealthrisksatwork.Inmostcountries,thereareregulationsandlawsabouthealthandsafetyatwork.4Theymightsufferfromachesandpainsfromsittingatdesksfortoo

4、long,ormaybetheywouldhaveeyeproblemsfromlookingatcomputerscreensfortoomanyhours.Perhapssomeworkersmayhaveproblemsfromtoomuchair-conditioning.Listeningin2.Workinpairs.ListentoPassage1andanswerthequestionsonpage44.1)Workinoffice-basedjobs.Answersforyourreferen

5、ce:2)Peoplearenotexercisingtheirbodiesandtheyareputtingonweight.3)Itiscausedbylongperiodsspentsittingatthecomputer.4)Theyensurestaffaresittingcorrectlyattheircomputersandtakebreaks.>>>>>>Listeningin2.Workinpairs.ListentoPassage1andanswerthequestionsonpage44.5)I

6、tiscausedbyseveralfactors:lackofnaturalairandlight,havingalotofelectronicdevicesandair-conditioning.6)Theyareinstallingbetterlightingandventilation,increasingthenumberofplantsandencouragingemployeestotakebreaks.1thepercentageofoffice-basedworkersin1901_______

7、_________________________2thepercentageofoffice-basedworkersbytheendofthe20thcentury________________________________3thepercentageofUKadultsoverweightin2001_______________________________4thenumberofpeoplesufferingRSIin2002_________________________________5the

8、percentageofsicknew/refurbishedbuildings________________________________Listeningin3.ListentoPassage1againandmakenotesabout:a/onefifth(20percent)18percentover40percentovera