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武汉大学经济与管理学院 《西方经济学》试题(A卷)2007年7月6日 主讲:陈忠斌审核: 姓名: 学号: 分数: 1、Whatisthedifferencebetweentheaggregatesupplyandaggregatedemandmodelusedinmacroeconomicsandmicroeconomics?(Score:15) 2、Supposeaneconomy’srealGDPis$30,000inyear1and$31,200inyear2.WhatisthegrowthrateofitsrealGDP?Assumethatpopulationwas100inyear1and102inyear2.WhatisthegrowthrateofGDPpercapita?(Score:15) 3、AssumetheconsumptionscheduleforaprivateopeneconomyissuchthatC=50+0.8Y.AssumefurtherthatplannedinvestmentandnetexportsareindependentofthelevelofincomeandconstantatIg=30andXn=10.Recallalsothatinequilibriumtherealoutputproduced(Y)isequaltotheaggregateexpenditures:Y=C+Ig+Xn.(a)Calculatetheequilibriumlevelofincomeforthiseconomy.(b)WhatwillhappentoequilibriumYifIgchangesto10?Whatdoesthistellyouaboutthesizeofthemultiplier?(Score:15) 4、Whyiseachofthefollowingincorrect?Statethecorrectproposition.(Score:15) Marginalrevenueproductiscalculatedastotalrevenueearnedperworker. Undercompetition,workersgetpaidthetotaloutputproducedminusthecostsofrawmaterials. 5、Drawthesupplyanddemandcurvesfortheoilmarket..Nowsupposethataworkableelectriccarshiftsdemandawayfromoil.Drawthenewdemandcurveandthenewequilibrium.Describetheoutcomeintermsofthepriceofoil,thequantityconsumed,andthetotalincomeoftheoilproducers. 6..Usingthesupplyanddemandanalysisofinterest,explainhoweachofthefollowingwouldaffectinterestratesincapitaltheory:(Score:15) a.Aninnovationthatincreasedthemarginalproductofcapitalateachlevelofcapital. b.Adecreaseinthedesiredwealthholdingsofhouseholds. c.A50percenttaxonthereturnoncapital(intheshortrun) 7、Whatiscomparativeadvantage?SupposethatTomproducehalfkilogrambeefandtwokilogrampotatoesperhour.Jerryproduces1.5kilogrambeefand3kilogrampotatoesperhour.Whoshouldproducebeef?Whoshouldproducepotato?(Score:10) 武汉大学经济与管理学院 《西方经济学》(A卷)参考答案2007年7月6日 1.宏观经济学的总供给和总需求模型看起来、听起来都与微观经济学的标准供求模型极为相似,它们是否有联系?Whatisthedifferencebetweentheaggregatesupplyandaggregatedemandmodelusedinmacroeconomicsandmicroeconomics?(15分) 答:1.Theag