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）

2、Ghanawine（葡萄酒）Nowreadthepassagetocheckyourmatching.WhyNationsTrade1.Internationaltradeistheexchangeofgoodsandservicesproducedinonecountryforgoodsandservicesproducedinanothercountry.Inmostcases,countriesdonottradetheactualgoodsandservices.Rather,theyusetheincome,ormoney,fromthe

3、saleoftheirproductstobuytheproductsofanothercountry.2.Tradeamongcountriesallowspeopleineachcountrytousetheirenergiesindoingwhattheydobest.Thatis,itletsthemspecialize.Tradeandspecializationgohandinhandandenableeachofustohavemoreproductstouseandmoredifferentkindsofproductsatthel

4、owestpossiblecost.3.Nationstradeformanyreasons.First,theytradebecausetherearedifferencesinnaturalresourcesindifferentpartsoftheworld.Theplantsthatcanbegrownaredifferent.Themineralresourcesarealsodifferent.Forexample,Canadahasnickelminesbutistoocoldtogroworanges.TheUnitedStates

5、hasonlyafewsmallnickelminesbutproduceslargecropsoforanges.SotheUnitedStatesbuysnickelfromCanada,andCanadabuysorangesfromtheUnitedStates.(WesaythattheUnitedStatesexportsorangesandimportsnickel.Canadaexportsnickelandimportsoranges.)4.Thesecondreasonnationstradewithoneanotheristh

6、atitpaystospecialize.Specializationmakesthebestuseofacountry'sproductiveresources--itsnaturalresources,theskillofitsworkers,anditsfactories.5.Whenacountryspecializes,itcanmakesomegoodsthatareofbetterqualitythangoodsmadeelsewhere.CarpetswoveninIranandwineproducedinFranceareexam

7、plesofthesespecialgoods.6.Specializationalsoenablesonecountrytoproducesomegoodsmorecheaplythananothercountry.Forexample,theUnitedStateshasfactories,machines,andtoolsformanufacturingjetplanes.Belgiumhasartisanswhoareskilledatmakinglace.SotheUnitedStatessellsjetplanestoBelgium.B

8、elgiumsellslacetotheUnitedStates.IftheBelgiansbuiltfactoriesa