曼昆《经济学原理》(微观)第五版测试题库-(05)

288Chapter5ElasticityandItsApplicationTRUE/FALSE1.Elasticitymeasureshowresponsivequantityistochangesinprice.ANS:TDIF:1REF:5-0NAT:AnalyticLOC:ElasticityTOP:PriceelasticityofdemandMSC:Definitional2.Measuresofelasticityenhanceourabilitytostudythemagnitudesofchanges.ANS:TDIF:1REF:5-0NAT:AnalyticLOC:ElasticityTOP:PriceelasticityofdemandMSC:Definitional3.Thedemandforbreadislikelytobemoreelasticthanthedemandforsolid-goldbreadplates.ANS:FDIF:2REF:5-1NAT:AnalyticLOC:ElasticityTOP:PriceelasticityofdemandMSC:Interpretive4.Ingeneral,demandcurvesfornecessitiestendtobepriceelastic.ANS:FDIF:1REF:5-1NAT:AnalyticLOC:ElasticityTOP:PriceelasticityofdemandMSC:Interpretive5.Ingeneral,demandcurvesforluxuriestendtobepriceelastic.ANS:TDIF:1REF:5-1NAT:AnalyticLOC:ElasticityTOP:PriceelasticityofdemandMSC:Interpretive6.Necessitiestendtohaveinelasticdemands,whereasluxurieshaveelasticdemands.ANS:TDIF:2REF:5-1NAT:AnalyticLOC:ElasticityTOP:PriceelasticityofdemandMSC:Interpretive7.Goodswithclosesubstitutestendtohavemoreelasticdemandsthandogoodswithoutclosesubstitutes.ANS:TDIF:2REF:5-1NAT:AnalyticLOC:ElasticityTOP:PriceelasticityofdemandMSC:Interpretive8.ThedemandforRiceKrispiesismoreelasticthanthedemandforcerealingeneral.ANS:TDIF:2REF:5-1NAT:AnalyticLOC:ElasticityTOP:PriceelasticityofdemandMSC:Interpretive9.ThedemandforsoapismoreelasticthanthedemandforDovesoap.ANS:FDIF:2REF:5-1NAT:AnalyticLOC:ElasticityTOP:PriceelasticityofdemandMSC:Interpretive10.Thedemandforgasolinewillrespondmoretoachangeinpriceoveraperiodoffiveweeksthanoveraperiodoffiveyears.ANS:FDIF:2REF:5-1NAT:AnalyticLOC:ElasticityTOP:PriceelasticityofdemandMSC:Interpretive11.Eventhedemandforanecessitysuchasgasolinewillrespondtoachangeinprice,especiallyoveralongertimehorizon.ANS:TDIF:2REF:5-1NAT:AnalyticLOC:ElasticityTOP:PriceelasticityofdemandMSC:Interpretive12.Thepriceelasticityofdemandisdefinedasthepercentagechangeinquantitydemandeddividedbythepercentagechangeinprice.ANS:TDIF:1REF:5-1NAT:AnalyticLOC:ElasticityTOP:PriceelasticityofdemandMSC:Definitional13.Thepriceelasticityofdemandisdefinedasthepercentagechangeinpricedividedbythepercentagechangeinquantitydemanded.ANS:FDIF:1REF:5-1NAT:AnalyticLOC:ElasticityTOP:PriceelasticityofdemandMSC:DefinitionalChapter5/ElasticityandItsApplication28914.Supposethatwhenthepricerisesby20%foraparticulargood,thequantitydemandedofthatgoodfallsby10%.Thepriceelasticityofdemandforthisgoodisequalto2.0.ANS:FDIF:2REF:5-1NAT:AnalyticLOC:ElasticityTOP:PriceelasticityofdemandMSC:Analytical15.Supposethatwhenthepricerisesby10%foraparticulargood,thequantitydemandedofthatgoodfallsby20%.Thepriceelasticityofdemandforthisgoodisequalto2.0.ANS:TDIF:2REF:5-1NAT:AnalyticLOC:ElasticityTOP:PriceelasticityofdemandMSC:Analytical16.Ifthepriceofcalculatorsincreasesby15percentandthequantitydemandedperweekfallsby45percentasaresult,thenthepriceelasticityofdemandis3.ANS:TDIF:2REF:5-1NAT:AnalyticLOC:ElasticityTOP:PriceelasticityofdemandMSC:Applicative17.Demandisinelasticifthepriceelasticityofdemandisgreaterthan1.ANS:FDIF:1REF:5-1NAT:AnalyticLOC:ElasticityTOP:InelasticdemandMSC:Definitional18.Alinear,downward-slopingdemandcurvehasaconstantelasticitybutachangingslope.ANS:FDIF:2REF:5-1NAT:AnalyticLOC:ElasticityTOP:PriceelasticityofdemandMSC:Interpretive19.Priceelasticityofdemandalongalinear,downward-slopingdemandcurveincreasesaspricefalls.ANS:FDIF:3REF:5-1NAT:AnalyticLOC:ElasticityTOP:PriceelasticityofdemandMSC:Interpretive20.Ifthepriceelasticityofdemandisequalto0,thendemandisunitelastic.ANS:FDIF:1REF:5-1NAT:AnalyticLOC:ElasticityTOP:PriceelasticityofdemandMSC:Definitional21.Ifthepriceelasticityofdemandisequalto1,thendemandisunitelastic.ANS:TDIF:1REF:5-1NAT:AnalyticLOC:ElasticityTOP:PriceelasticityofdemandMSC:Definitional22.Demandforagoodissaidtobeinelasticifthequantitydemandedincreasessubstantiallywhenthepricefallsbyasmallamount.ANS:FDIF:1REF:5-1NAT:AnalyticLOC:ElasticityTOP:InelasticdemandMSC:Definitional23.Themidpointmethodisusedtocalculateelasticitybetweentwopointsbecauseitgivesthesameanswerregardlessofthedirectionofthechange.ANS:TDIF:2REF:5-1NAT:AnalyticLOC:ElasticityTOP:MidpointmethodMSC:Interpretive24.Theflatterthedemandcurvethatpassesthroughagivenpoint,themoreinelasticthedemand.ANS:FDIF:2REF:5-1NAT:AnalyticLOC:ElasticityTOP:PriceelasticityofdemandMSC:Interpretive25.Theflatterthedemandcurvethatpassesthroughagivenpoint,themoreelasticthedemand.ANS:TDIF:2REF:5-1NAT:AnalyticLOC:ElasticityTOP:PriceelasticityofdemandMSC:Interpretive26.Ifdemandisperfectlyinelastic,thedemandcurveisvertical,andthepriceelasticityofdemandequals0.ANS:TDIF:2REF:5-1NAT:AnalyticLOC:ElasticityTOP:PerfectlyinelasticdemandMSC:Interpretive27.Ifdemandisperfectlyelastic,thedemandcurveishorizontal,andthepriceelasticityofdemandequals1.ANS:FDIF:2REF:5-1NAT:AnalyticLOC:ElasticityTOP:PerfectlyelasticdemandMSC:Interpretive290Chapter5/ElasticityandItsApplication28.Alongtheelasticportionofalineardemandcurve,totalrevenuerisesaspricerises.ANS:FDIF:3REF:5-1NAT:AnalyticLOC:ElasticityTOP:Totalrevenue|Priceelasticityofdemand