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）theU

2、nitedStateslace（花边）Ghanawine（葡萄酒）Nowreadthepassagetocheckyourmatching.WhyNationsTrade1.Internationaltradeistheexchangeofgoodsandservicesproducedinonecountryforgoodsandservicesproducedinanothercountry.Inmostcases,countriesdonottradetheactualgoodsandservices.R

3、ather,theyusetheincome,ormoney,fromthesaleoftheirproductstobuytheproductsofanothercountry.2.Tradeamongcountriesallowspeopleineachcountrytousetheirenergiesindoingwhattheydobest.Thatis,itletsthemspecialize.Tradeandspecializationgohandinhandandenableeachofustoh

4、avemoreproductstouseandmoredifferentkindsofproductsatthelowestpossiblecost.3.Nationstradeformanyreasons.First,theytradebecausetherearedifferencesinnaturalresourcesindifferentpartsoftheworld.Theplantsthatcanbegrownaredifferent.Themineralresourcesarealsodiffer

5、ent.Forexample,Canadahasnickelminesbutistoocoldtogroworanges.TheUnitedStateshasonlyafewsmallnickelminesbutproduceslargecropsoforanges.SotheUnitedStatesbuysnickelfromCanada,andCanadabuysorangesfromtheUnitedStates.(WesaythattheUnitedStatesexportsorangesandimpo

6、rtsnickel.Canadaexportsnickelandimportsoranges.)4.Thesecondreasonnationstradewithoneanotheristhatitpaystospecialize.Specializationmakesthebestuseofacountry'sproductiveresources--itsnaturalresources,theskillofitsworkers,anditsfactories.5.Whenacountryspecializ

7、es,itcanmakesomegoodsthatareofbetterqualitythangoodsmadeelsewhere.CarpetswoveninIranandwineproducedinFranceareexamplesofthesespecialgoods.6.Specializationalsoenablesonecountrytoproducesomegoodsmorecheaplythananothercountry.Forexample,theUnitedStateshasfactor

8、ies,machines,andtoolsformanufacturingjetplanes.Belgiumhasartisanswhoareskilledatmakinglace.SotheUnitedStatessellsjetplanestoBelgium.BelgiumsellslacetotheUnitedStates.IftheBelgiansbuiltfactoriesa