经济学原理对应练习 21.docx
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经济学原理对应练习 21.docx
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经济学原理对应练习21
Chapter21
MultipleChoice
1.Thetheoryofconsumerchoiceprovidesthefoundationforunderstanding
a.thestructureofafirm.
b.theprofitabilityofafirm.
c.afirm'sproductdemand.
d.afirm'sproductsupply.
ANS:
CPTS:
1DIF:
1REF:
21-0
TOP:
ConsumerchoiceMSC:
Definitional
2.Thetheoryofconsumerchoiceexamines
a.thedeterminationofoutputincompetitivemarkets.
b.thetradeoffsinherentindecisionsmadebyconsumers.
c.howconsumersselectinputsintomanufacturingproductionprocesses.
d.thedeterminationofpricesincompetitivemarkets.
ANS:
BPTS:
1DIF:
1REF:
21-0
TOP:
ConsumerchoiceMSC:
Definitional
3.Considertwogoods,booksandhamburgers.Theslopeoftheconsumer'sbudgetconstraintismeasuredbythe
a.consumer'sincomedividedbythepriceofhamburgers.
b.relativepriceofbooksandhamburgers.
c.consumer'smarginalrateofsubstitution.
d.numberofbookspurchaseddividedbythenumberofhamburgerspurchased.
ANS:
BPTS:
1DIF:
2REF:
21-1
TOP:
BudgetconstraintMSC:
Interpretive
4.Ifaconsumer'sincomedecreases,thebudgetconstraintforCDsandDVDswill
a.shiftoutward,paralleltotheoriginalbudgetconstraint.
b.shiftinward,paralleltotheoriginalbudgetconstraint.
c.rotateoutwardalongtheCDaxisbecausewecanaffordmoreCDs.
d.rotateoutwardalongtheDVDaxisbecausewecanaffordmoreDVDs.
ANS:
BPTS:
1DIF:
2REF:
21-1
TOP:
BudgetconstraintMSC:
Analytical
5.Iftherelativepriceofaconcertticketis3timesthepriceofamealatagoodrestaurant,thentheopportunitycostofaconcertticketcanbemeasuredbythe
a.slopeofthebudgetconstraint.
b.slopeofanindifferencecurve.
c.marginalrateofsubstitution.
d.incomeeffect.
ANS:
APTS:
1DIF:
2REF:
21-1
TOP:
BudgetconstraintMSC:
Analytical
6.Whenthepriceofashirtfalls,the
a.quantityofshirtsdemandedfalls.
b.quantityofshirtsdemandedrises.
c.quantityofshirtssuppliedrises.
d.demandforshirtsfalls.
ANS:
BPTS:
1DIF:
1REF:
21-1
TOP:
DemandMSC:
Analytical
7.Abudgetconstraint
a.showsthepricesthataconsumerchoosestopayforproductsheconsumes.
b.showsthepurchasesmadebyconsumers.
c.showstheconsumptionbundlesthataconsumercanafford.
d.representstheconsumptionbundlesthatgiveaconsumerequalsatisfaction.
ANS:
CPTS:
1DIF:
1REF:
21-1
TOP:
BudgetconstraintMSC:
Definitional
8.Assumethatacollegestudentspendsherincomeonbooksandpizza.Thepriceofapizzais$8.00,andthepriceofabookis$15.Ifshehas$100ofincome,shecouldchoosetoconsume
a.8pizzasand4books.
b.4pizzasand5books.
c.9pizzasand3books.
d.4pizzasand3books.
ANS:
DPTS:
1DIF:
2REF:
21-1
TOP:
BudgetconstraintMSC:
Applicative
9.Assumethatacollegestudentspendsherincomeonmac-n-cheeseandCDs.Thepriceofoneboxofmac-n-cheeseis$1.00,andthepriceofoneCDis$12.00.Ifshehas$100ofincome,shecouldchoosetoconsume
a.15boxesofmac-n-cheeseand6CDs.
b.20boxesofmac-n-cheeseand7CDs.
c.10boxesofmac-n-cheeseand8CDs.
d.30boxesofmac-n-cheeseand6CDs.
ANS:
APTS:
1DIF:
2REF:
21-1
TOP:
BudgetconstraintMSC:
Applicative
10.Aconsumerthatdoesn'tspendallofherincome
a.wouldbeatapointoutsideofherbudgetconstraint.
b.wouldbeatapointinsideherbudgetconstraint.
c.mustnotbeconsumingpositivequantitiesofallgoods.
d.mustbeconsumingatapointwhereherbudgetconstrainttouchesoneoftheaxes.
ANS:
BPTS:
1DIF:
2REF:
21-1
TOP:
BudgetconstraintMSC:
Interpretive
11.Anincreaseinincomewillcauseaconsumer'sbudgetconstraintto
a.shiftoutward,paralleltoitsinitialposition.
b.shiftinward,paralleltoitsinitialposition.
c.pivotaroundthe"Y"axis.
d.pivotaroundthe"X"axis.
ANS:
APTS:
1DIF:
2REF:
21-1
TOP:
BudgetconstraintMSC:
Analytical
Figure21-1
12.RefertoFigure21-1.Whichpointinthefigureshowingaconsumer’sbudgetconstraintrepresentstheconsumer'sincomedividedbythepriceofaCD?
a.PointA
b.PointC
c.PointD
d.PointE
ANS:
CPTS:
1DIF:
2REF:
21-1
TOP:
BudgetconstraintMSC:
Applicative
13.RefertoFigure21-1.Aconsumerthatchoosestospendallofherincomecouldbeatwhichpoint(s)onthebudgetconstraint?
a.A
b.E
c.B,C,orD
d.A,B,C,orD
ANS:
CPTS:
1DIF:
1REF:
21-1
TOP:
BudgetconstraintMSC:
Applicative
14.RefertoFigure21-1.Allofthepointsidentifiedinthefigurerepresentpossibleconsumptionoptionswiththeexceptionof
a.A
b.E
c.AandE
d.None.Allpointsarepossibleconsumptionoptions.
ANS:
BPTS:
1DIF:
2REF:
21-1
TOP:
BudgetconstraintMSC:
Applicative
Figure21-2
15.RefertoFigure21-2.WhichofthegraphsinthefigurereflectsadecreaseinthepriceofgoodXonly?
a.graph(a)
b.graph(b)
c.graph(c)
d.graph(d)
ANS:
BPTS:
1DIF:
2REF:
21-1
TOP:
BudgetconstraintMSC:
Analytical
16.RefertoFigure21-2.WhichofthegraphsinthefigurereflectsanincreaseinthepriceofgoodYonly?
a.graph(a)
b.graph(b)
c.graph(c)
d.graph(d)
ANS:
CPTS:
1DIF:
2REF:
21-1
TOP:
BudgetconstraintMSC:
Analytical
17.RefertoFigure21-2.Whichofthegraphsinthefigurecouldreflectadecreaseinthepricesofbothgoods?
a.graph(a)
b.graph(b)
c.graph(c)
d.graph(d)
ANS:
DPTS:
1DIF:
2REF:
21-1
TOP:
BudgetconstraintMSC:
Analytical
18.Theslopeofthebudgetconstraintisdeterminedbythe
a.relativepriceofthegoodsmeasuredontheaxes.
b.relativepriceofthegoodsmeasuredontheaxesandtheconsumer’sincome.
c.endowmentofproductiveresources.
d.preferencesoftheconsumer.
ANS:
APTS:
1DIF:
1REF:
21-1
TOP:
BudgetconstraintMSC:
Definitional
19.Theslopeofthebudgetconstraintisallofthefollowingexcept
a.therelativepriceoftwogoods.
b.therateatwhichaconsumercantradeonegoodforanother.
c.themarginalrateofsubstitution.
d.constant.
ANS:
CPTS:
1DIF:
1REF:
21-1
TOP:
BudgetconstraintMSC:
Definitional
Figure21-3
20.RefertoFigure21-3.Ingraph(a),ifincomeisequalto$120,thepriceofgoodyis
a.$1
b.$2
c.$3
d.$4
ANS:
CPTS:
1DIF:
2REF:
21-1
TOP:
BudgetconstraintMSC:
Applicative
21.RefertoFigure21-3.Ingraph(a),whatisthepriceofgoodyrelativetogoodx(i.e.,Py/Px)?
a.1/3
b.1/4
c.3
d.4
ANS:
BPTS:
1DIF:
3REF:
21-1
TOP:
BudgetconstraintMSC:
Applicative
22.RefertoFigure21-3.Ingraph(b),whatisthepriceofgoodxrelativetogoody(i.e.,Px/Py)?
a.2/7
b.3/6
c.7/2
d.7
ANS:
APTS:
1DIF:
3REF:
21-1
TOP:
BudgetconstraintMSC:
Applicative
23.RefertoFigure21-3.Assumethataconsumerfacesbothbudgetconstraintsingraph(a)andgraph(b)ontwodifferentoccasions.Ifherincomehasremainedconstant,whathashappenedtoprices?
a.ThepriceofXingraph(a)ishigherthanthepriceofXingraph(b).
b.ThepriceofYingraph(a)ishigherthanthepriceofYingraph(b).
c.ThepricesofbothXandYareloweringraph(a).
d.Noneoftheabovearetrue.
ANS:
APTS:
1DIF:
3REF:
21-1
TOP:
BudgetconstraintMSC:
Analytical
24.Supposeaconsumerspendsherincomeontwogoods:
musicCDsandDVDs.Iftheconsumerhas$200toallocatetothesetwogoods,thepriceofaCDis$10,andthepriceofaDVDis$20,whatisthemaximumnumberofCDstheconsumercanpurchase?
a.10
b.20
c.40
d.50
ANS:
BPTS:
1DIF:
1REF:
21-1
TOP:
BudgetconstraintMSC:
Applicative
25.Supposeaconsumerspendsherincomeontwogoods:
musicCDsandDVDs.IfthepriceofaCDis$8,thepriceofaDVDis$20,andwegraphthebudgetconstraintbyplacingthequantityofCDspurchasedonthehorizontalaxis,whatistheslopeofthebudgetconstraint?
a.-5.0
b.-2.5
c.-0.4
d.Theslopeofthebudgetconstraintcannotbedeterminedwithoutknowingtheincometheconsumerhasavailabletospendonthetwogoods.
ANS:
CPTS:
1DIF:
2REF:
21-1
TOP:
BudgetconstraintMSC:
Applicative
26.Supposeaconsumeriscurrentlyspendingallofheravailableincomeontwogoods:
musicCDsandDVDs.IfthepriceofaCDis$9,thepriceofaDVDis$18,andsheiscurrentlyconsuming10CDsand5DVDs,whatistheconsumer'sincome?
a.$90
b.$180
c.$270
d.$360
ANS:
BPTS:
1DIF:
2REF:
21-1
TOP:
BudgetconstraintMSC:
Applicative
27.Aconsumeriscurrentlyspendingallofheravailableincomeontwogoods:
musicCDsandDVDs.AthercurrentconsumptionbundlesheisspendingtwiceasmuchonCDsassheisonDVDs.Iftheconsumerhas$120ofincomeandisconsuming10CDsand2DVDs,whatisthepriceofaCD?
a.$4
b.$8
c.$12
d.$20
ANS:
BPTS:
1DIF:
3REF:
21-1
TOP:
BudgetconstraintMSC:
Analytical
28.Thefollowingdiagramshowsabudgetconstraintforaparticularconsumer.
Ifthepriceofxis$10,whatisthepriceofy?
a.$15
b.$25
c.$35
d.$70
ANS:
CPTS:
1DIF:
3REF:
21-1
TOP:
BudgetconstraintMSC:
Analytical
29.Budgetconstraintsexistforconsumersbecause
a.theirutilityfromconsuminggoodseventuallyreachesamaximumlevel.
b.evenwithunlimitedincomestheyhavetopayforeachgoodtheyconsume.
c.theyhavetopayforgoodsandtheyhavelimitedincomes.
d.pricesandincomesareinverselyrelated.
ANS:
CPTS:
1DIF:
2REF:
21-1
TOP:
BudgetconstraintMSC:
Interpretive
30.Afamilyonatripbudgets$800formealsandgasoline.Ifthepriceofamealforthefamilyis$50,howmanymealscanthefamilybuyiftheydonotbuyanygasoline?
a.8
b.16
c.24
d.32
ANS:
BPTS:
1DIF:
2REF:
21-1
TOP:
BudgetconstraintMSC:
Applicative
31.Afamilyonatripbudgets$800formealsandhotelaccommodations.Supposethepriceofamealis$40.Inaddition,supposethefamilyc
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