microeconomics-经济学练习题

1microeconomics2012-1Student:___________________________________________________________________________一、選擇題：每題三分1.Youhadtopay$600(non-refundable)foryourmealplanforFallsemesterwhichgivesyouupto150meals.Ifyoueatonly100meals,yourmarginalcostforthe100thmealisA.$6B.$4C.$0.25D.$02.Refertothefigureabove.Accordingtothecost-benefitprinciple,thelevelofactivitythatprovidesthelargestnetbenefitisA.1B.4C.5D.7IBMemploysPamtoassemblepersonalcomputers.Pamcanassemble1computerifsheworks1hour,4computersin2hours,8computersin3hours,10computersin4hours,and11computersin5hours.Eachcomputerconsistsofamotherboardthatcosts$200,aharddrivethatcosts$100,acasethatcosts$20,amonitorthatcosts$200,akeyboardat$60andamousethatcosts$20.ThecostofemployingPamis$40perhour.3.WhatisthemarginalcostofproducingthecomputersPamassemblesduringher3rdhourofwork?A.$1,200B.$1,240C.$2,400D.$2,4402YouownapizzashopcalledPizza'R'Us.Currentlyyouarepayingyourcooksanhourlywageof$20.Yousellamediumpizzafor$10apie.Byhiringmorecooks,youcanincreaseyourpizzaproductionasshowninthefollowingtable.4.Ifyouoperateonehoureverydaywhatisthemarginalbenefitofthe3rdcook?A.$10B.$20C.$30D.$405.IBMsellseachcomputerfor$620.HowmanyhoursshouldIBMemployPamtomaximizeitsbenefitfromheremployment?A.1hourB.2hoursC.3hoursD.4hours6.ThecentralconcernofeconomicsisA.poverty.B.scarcity.C.wealthaccumulation.D.overconsumption.Pathas4hourstospendeitherstudyingforatestorplayinganewvideogame.IfPatspendsallofthattimestudying,Patcanscorea92onthetest.IfPatplaysfor1hour,Pat'stestscorefalls5points.Forplayingasecondhour,Pat'sscorefallsby7points.PlayingforathirdhourwilllowerPat'sscorebyanother10points.7.TheopportunitycostofplayingvideogamesA.decreasesthelongerPatplays.B.increasesthelongerPatplays.C.isgreaterthanthevalueofearningahighergradeonthetest.D.isequaltothevalueofearningahighergradeonthetest.38.Refertothefigureabove.Ifthisrestaurantmakes75saladsinonehour,approximatelyhowmanypizzascanitalsomakeinthatsamehour,assumingefficientproduction?A.0B.10C.20D.309.Refertothefigureabove.IfPatandChrisweretospecializeinthetaskforwhicheachhasacomparativeadvantage,A.ChriswouldplantbulbsandPatwouldhaulouttrash.B.ChriswouldhaulouttrashandPatwouldplantbulbs.C.PatandChriswouldeachspendonehouroneachtask.D.bothwouldplantbulbsastheybothhaveanabsoluteadvantageinthattask.SmithandJonescompriseatwo-personeconomy.Theirhourlyratesofproductionareshownbelow.410.Foranyefficientpointwithfewerthan10computersandmorethan120calculators,Smithwill__________andJoneswill__________.A.splithistimebetweenthetwo;onlyproducecalculatorsB.splithistimebetweenthetwo;splithistimebetweenthetwoC.onlyproducecalculators;onlyproducecomputersD.onlyproducecomputers;onlyproducecalculators11.ThebenefitstospecializationareenhancedwhenthetwotradingpartnershaveA.absoluteadvantagesinproducingthesamegoods.B.similarconsumptionpreferences.C.verysimilaropportunitycosts.D.largecomparativeadvantagesindifferentgoods.Dent'nScratchUsedCarsandTrucksemploys3salesmen.Datafortheirsaleslastmonthareshowninthistable:12.______shouldspecializeintrucksalesand______shouldspecializeincarsales.A.Joe;RalphB.Ralph;LarryC.Larry;RalphD.Larry;JoeEarthMoversandShakersoperates3ironoremines.Thistableshowstheirdailyproductionratesgiventhenumberofminersateachmine.Alloftheminersworkforthesamewage.13.Bytakingthefirsttonsfrom______,MoversandShakersisproducingconsistentwiththe_____Principle.A.MotherLode;LowHangingFruitB.MiddleDrift;CompromiseC.MiddleDrift:LowHangingFruitD.ScrapingBottom;CostMinimizing514.TheNoCashontheTableprincipleassertsthatA.inequilibrium,afewunexploitedopportunitiesexist.B.sometimestipsaren'tpickedup.C.indisequilibrium,noopportunitiesexist.D.inequilibrium,allopportunitieshavebeenexploited.15.AmarketindisequilibriumwouldfeatureA.astableprice.B.consumersabletopurchasealltheywishatthemarketprice.C.astablequantity.D.eitherexcesssupplyorexcessdemand.16.Ingeneral,whenthesupplycurveshiftstotheleftanddemandisconstantthenA.themarketcannotreestablishanequilibrium.B.theequilibriumpricewillfall.C.theequilibriumquantitywillrise.D.theequilibriumpricewillrise.17.Refertothefigureabove.AssumethemarketisoriginallyatpointW.MovementtopointXisacombinationofA.anincreaseinquantitysuppliedandanincreaseindemand.B.anincreaseinsupplyandanincreaseindemand.C.anincreaseinsupplyandanincreaseinquantitydemanded.D.adecreaseinsupplyandanincreaseinquantitydemanded.618.Whenthepriceofagoodisbelowitsequilibriumvalue,A.consumerswillbidthepriceup.B.excesssupplywilloccur.C.itwilltendtostaybelowtheequilibriumvalue.D.supplierswillnoticetheirinventoriesaregrowing.19.Assumingconsumerseateitherriceorpastafordinnereverynight.Ifthepriceofriceincreases,inthepastamarketonewouldexpecttoseeA.increaseinthequantityofpastademanded.B.increaseinthedemandforpasta.C.decreaseinthequantityofpastademanded.D.decreaseinthedemandforpasta.20.IfthedemandforPersonalComputers(PC)shiftstotheright(up)asconsumers'incomesrise,PC'sareA.inferiorgoods.B.complementgoods.C.normalgoods.D.substitutegoods.二、應用題1.Toearnextramoneyinthesummer,yougrowtomatoesandsellthe