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1、UNIT7 InternationalTradeCONTENTSTeachingAimsTextATextBSupplementingReadingTEACHINGAIMSAfterstudyingthisunit,youarerequiredtoHaveageneralideaofthereasonswhyinternationaltradetakesplace.2.Understandthethreemostimportantcategoriesinanation’sbalanceofpayments.3.Haveageneralid
2、eaofwhatLawofComparativeCostsmeans.4.Masterthedifficultwordsandexpressions.TextAAnIntroductiontoInternationalTradePreviewquestionsInyouropinion,whydonationsexchangegoods?Istheseanyotherkindoftradeexcepttheimportandexportofgoodsandmerchandise?Whatbenefitscanforeigninvestmen
3、tbringtothelocaleconomy?TEXTAReadingComprehensionReadthefollowingsentencesanddecidewhethertheyaretrue（T)orfalse（F)．1.TheUnitedStatesisamajorconsumerofwheat,yetitdoesnothavetheclimatetogrowanyofitsown.()2.Thefirstreasonwhytheexchangeofgoodsbetweennationstakesplaceisthatnona
4、tionhasallofthecommoditiesthatitneeds.()3.TheUnitedStatesproducesmoreautomobilesthananyothercountry,soithasnoneedtoimportlargequantitiesofautosfromothercountries.()FFT4.Whencountriesimportmorethantheyexport,anunfavorablebalanceoftradeexists.()5.Thedifferentkindsoftradenati
5、onsengageinarevariedandcomplex,amixtureofvisibleandinvisibletrade.()TTTEXTAReadingComprehensionTEXTANotesGuatemala(危地马拉)isacountryinCentralAmericaborderedbyMexicotothenorthandwest,thePacificOceantothesouthwest,Belizetothenortheast,theCaribbeantotheeast,andHondurasandElSalv
6、adortothesoutheast.Itsareais108,890 km²(42,043 mi²)withanestimatedpopulationof13,276,517.TEXTANewWordsandExpressions:1.cavemann.（史前石器时代的）穴居人；野人Economicactivity beganwiththecaveman,whowaseconomicallyself-sufficient.经济活动始于自给自足的穴居人。2.surplusn.剩余；顺差；盈余；过剩Idenythat"surplusvalue
7、isthesourceofprofit"inanyusefulsense.在任何有用的意义上，我都否认“剩余价值是利润的源泉”。TEXTANewWordsandExpressions:3.utilizevt.利用Toavoidanoilshortage,moremachinesshouldutilizesolarenergy.为避免石油短缺，更多的机器应当利用太阳能。4.plantn.工厂，车间Wouldyouliketoseethevideointroducingourplant?你们要看介绍我们工厂情况的录像片吗？TEXTANewWor
8、dsandExpressions:5.bartern.物物交换；实物交易Thesoldiersbarteredforfurswithrifles.士兵们以步枪交换毛皮。6.sca
