实用英语综合教程第一册3

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1、实用英语综合教程第一册3UNIT3TextAPRE-READINGTASKExercise1Beforereadingthepassage,trytomatchtheMainProducts（主要产品）ontherightwiththeCountriesontheleft.COUNTRIESMAINPRODUCTSBelgiumjetplanes（喷气式飞机）Canadanickel（镍）FrancecoffeeIranrubberMalaysiacocoa（可可）Colombiacarpets（地毯）theUnitedStateslace（花边）Ghanawine（葡萄酒）Nowre

2、adthepassagetocheckyourmatching.WhyNationsTrade1.Internationaltradeistheexchangeofgoodsandservicesproducedinonecountryforgoodsandservicesproducedinanothercountry.Inmostcases,countriesdonottradetheactualgoodsandservices.Rather,theyusetheincome,ormoney,fromthesaleoftheirproductstobuytheproductsofa

3、nothercountry.2.Tradeamongcountriesallowspeopleineachcountrytousetheirenergiesindoingwhattheydobest.Thatis,itletsthemspecialize.Tradeandspecializationgohandinhandandenableeachofustohavemoreproductstouseandmoredifferentkindsofproductsatthelowestpossiblecost.3.Nationstradeformanyreasons.First,they

4、tradebecausetherearedifferencesinnaturalresourcesindifferentpartsoftheworld.Theplantsthatcanbegrownaredifferent.Themineralresourcesarealsodifferent.Forexample,Canadahasnickelminesbutistoocoldtogroworanges.TheUnitedStateshasonlyafewsmallnickelminesbutproduceslargecropsoforanges.SotheUnitedStatesb

5、uysnickelfromCanada,andCanadabuysorangesfromtheUnitedStates.(WesaythattheUnitedStatesexportsorangesandimportsnickel.Canadaexportsnickelandimportsoranges.)4.Thesecondreasonnationstradewithoneanotheristhatitpaystospecialize.Specializationmakesthebestuseofacountry'sproductiveresources--itsnaturalre

6、sources,theskillofitsworkers,anditsfactories.5.Whenacountryspecializes,itcanmakesomegoodsthatareofbetterqualitythangoodsmadeelsewhere.CarpetswoveninIranandwineproducedinFranceareexamplesofthesespecialgoods.6.Specializationalsoenablesonecountrytoproducesomegoodsmorecheaplythananothercountry.Forex

7、ample,theUnitedStateshasfactories,machines,andtoolsformanufacturingjetplanes.Belgiumhasartisanswhoareskilledatmakinglace.SotheUnitedStatessellsjetplanestoBelgium.BelgiumsellslacetotheUnitedStates.IftheBelgiansbuiltfactoriesa