雅思A-图表作文.ppt

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1、ThetwographsshowthemainsourcesofenergyintheUSAinthe1980sandthe1990s.Writeareportforauniversitylecturerdescribingthechangeswhichoccurred.modelanswer:ThetwographsshowthatoilwasthemajorenergysourceintheUSAinboth1980and1990andthatcoal,naturalgasandhydroelectricpowerremainedinmuchthesameproportions.O

2、ntheotherhand,therewasadramaticriseinnuclearpower,whichdoubleditspercentageoverthetenyears.Oilsuppliedthelargestpercentageofenergy,althoughthepercentagedecreasedfrom42%in1980to33%in1990.Coalin1990wasthesecondlargestsourceofenergy,increasingitsproportionto27%from22%inthepreviousdecade.Naturalgas,

3、thesecondlargestsourcein1980at26%,decreaseditsshareveryslightlytoprovide25%ofAmerica’senergytenyearslater.Therewasnochangeinthepercentagesuppliedbyhydroelectricpowerwhichremainedat5%ofthetotalenergyused.Nuclearpowerthegreatestchange:in1990itwas10%,twicethatofthe1980s.Thegraphbelowshowsthedifferenc

4、esinwheatexportsoverthreedifferentareas.Writeareportforauniversitylecturerdescribingtheinformationshownbelow.modelanswer:Thethreegraphsofwheatexportseachshowaquitedifferentpatternbetween1985and1990.ExportsfromAustraliadeclinedoverthefive-yearperiod,whiletheCanadianmarketfluctuatedconsiderably,an

5、dtheEuropeanCommunityshowedanincrease.In1985,Australiaexportedabout15millionsoftonnesofwheatandthefollowingyearthenumberincreasedbyonemilliontonnesto16million.Afterthat,however,therewasagradualdeclineuntil1989and1990whenitstabilisedatabout11milliontonnes.Overthesameperiod,theamountofCanadianexpo

6、rtsvariedgreatly.Itstartedat19milliontonnesin1985,reachedapeakin1988of24million,droppeddramaticallyin1989to14milliontonnesandthenclimbedbackto19millionin1990.SeventeenmilliontonneswereexportedfromtheEuropeanCommunityin1985,butthisdecreasedto14milliontonnesin1986andthenroseto15millionin1987and1988b

7、eforeincreasingoncemoreto20millionin1990.Theflowchartillustratestheproductionofcolouredplasticpaperclipsinasmallfactory.Writeareportforauniversitytutordescribingtheproductionprocess.Therearefourmainstagesinthepr