微观经济学的练习题以及答案英文版Word文档格式.docx
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微观经济学的练习题以及答案英文版Word文档格式.docx
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limitedtomarketactivities,e.g.,buyingsoap.B.
limitedtoindividualsandfirms.C.
extremelywide,requiringonlytheideasofchoiceandscarcity.D.
verylimited.
4.
Thecentralconcernofeconomicsis:
poverty.B.
scarcity.C.
wealthaccumulation.D.
overconsumption.
5.
Thescarcityprincipleindicatesthat:
nomatterhowmuchonehas,itisneverenough.B.
comparedto100yearsago,individualshavelesstimetoday.C.
withlimitedresources,havingmoreof"
this"
meanshavinglessof"
that."
D.
becausetradeoffsmustbemade,resourcesarethereforescarce.
6.
Thelogicalimplicationofthescarcityprincipleisthat:
onewillneverbesatisfiedwithwhatonehas.B.
aswealthincreases,makingchoicesbecomeslessnecessary.C.
aswealthdecreases,makingchoicesbecomeslessnecessary.D.
choicesmustbemade.
7.
Ifalltheworld'
sresourcesweretomagicallyincreaseahundredfold,then:
thescarcityprinciplewouldstillgovernbehavior.B.
economicswouldnolongerberelevant.C.
thescarcityprinciplewoulddisappear.D.
tradeoffswouldbecomeunnecessary.
8.
Theprincipleofscarcityappliesto:
thepoorexclusively.B.
allconsumers.C.
allfirms.D.
everyone—consumers,firms,governments,andnations.
9.
Attheveryleast,JoeAverageandBillGatesarebothidenticallylimitedby:
theirwealth.B.
the24hoursthatcompriseaday.C.
theirknowledge.D.
theirinfluence.
10.
ForestisamountainmanlivingincompleteisolationinMontana.Heiscompletelyself-sufficientthroughhunting,fishing,andfarming.Hehasnotbeeninthecitytobuyanythinginfiveyears.Onecaninfer:
thescarcityprincipledoesnotapplytoForest.B.
Forestisnotrequiredtomakechoices.C.
thescarcityprinciplestillappliesbecausemorehuntingmeanslessfishingandfarming.D.
Forestisverysatisfied.
11.
Thescarcityprincipleappliesto:
alldecisions.B.
onlymarketdecisions,e.g.,buyingacar.C.
onlynon-marketdecisions,e.g.,watchingasunset.D.
onlythepoor.
12.
Chrishasaone-hourbreakbetweenclasseseveryWednesday.Chriscaneitherstayatthelibraryandstudyorgotothegymandworkout.ThedecisionChrismustmakeis:
notaneconomicproblembecauseneitheronecostsmoney.B.
notaneconomicproblembecauseit'
sanhourthatiswastednomatterwhatChrisdoes.C.
aneconomicproblembecausethetuitionChrispayscoversboththegymandthelibrary.D.
aneconomicproblembecauseChrishasonlyonehourduringwhichhecanstudyorworkout.
13.
Joshwantstogotothefootballgamethisweekend,buthehasapaperdueonMonday.Itwilltakehimthewholeweekendtowritethepaper.Joshdecidedtostayhomeandworkonthepaper.Accordingtothescarcityprinciple,thereasonJoshdidn'
tgotothegameisthat:
Joshprefersschoolworktofootballgames.B.
writingthepaperiseasierthangoingtothegame.C.
Joshdoesn'
thaveenoughtimeforwritingthepaperandgoingtothegame.D.
it'
stooexpensivetogotothegame.
14.
WhetherstudyingthesizeoftheU.S.economyorthenumberofchildrenacouplewillchoosetohave,theunifyingconceptisthatwantsare:
limited,resourcesarelimited,andthuschoicesmustbemade.B.
unlimited,resourcesarelimited,andthuschoicesmustbemade.C.
unlimited,resourcesarelimitedtosomebutnottoothers,andthussomepeoplemustmakechoices.D.
unlimited,resourcesarelimited,andthusgovernmentneedstodomore.
15.
Thecost-benefitprincipleindicatesthatanactionshouldbetaken:
ifthetotalbenefitsexceedthetotalcosts.B.
iftheaveragebenefitsexceedtheaveragecosts.C.
ifthenetbenefit(benefitminuscost)iszero.D.
iftheextrabenefitisgreaterthanorequaltotheextracosts.
16.
Whenapersondecidestopursueanactivityaslongastheextrabenefitsareatleastequaltotheextracosts,thatpersonis:
violatingthecost-benefitprinciple.B.
followingthescarcityprinciple.C.
followingthecost-benefitprinciple.D.
pursuingtheactivitytoolong.
17.
Choosingtostudyforanexamuntiltheextrabenefit(improvedscore)equalstheextracost(mentalfatigue)is:
notrational.B.
anapplicationofthecost-benefitprinciple.C.
anapplicationofthescarcityprinciple.D.
therelevantopportunitycost.
18.
Thescarcityprincipletellsusthat__________,andthecost-benefitprincipletellsus__________.
choicesmustbemade;
howtomakethechoicesB.
thatthecostscanneveroutweighthebenefitsofthechoicesC.
raregoodsareexpensive;
thatthecostsshouldoutweighthebenefitsofthechoicesD.
thatthecostscanneveroutweighthebenefitsofthechoices
19.
Accordingtothecost-benefitprinciple:
thelowestcostactivityusuallygivesthelowestbenefit.B.
apersonshouldalwayschoosetheactivitywiththelowestcost.C.
apersonshouldalwayschoosetheactivitywiththegreatestbenefit.D.
theextracostsandbenefitsofanactivityaremoreimportantconsiderationsthanthetotalcostsandbenefits.
20.
Arationalpersonisonewho:
isreasonable.B.
makeschoicesthatareeasilyunderstood.C.
possesseswell-definedgoalsandseekstoachievethem.D.
ishighlycynical.
21.
TheseventhglassofsodathatTimconsumeswillproduceanextrabenefitof10centsandhasanextracostofzero(Timiseatingatthecafeteria).Thecost-benefitprinciplepredictsthatTimwill:
realizehehashadtoomuchsodatodrinkandgohome.B.
drinktheseventhglassandcontinueuntilthemarginalbenefitofdrinkinganotherglassofsodaiszero.C.
volunteertoemptyoutthefountain.D.
notdrinktheseventhglass.
22.
Janiemusteithermowthelawnorwashclothes,earningherabenefitof$30or$45,respectively.Shedislikesbothequallyandtheybothtakethesameamountoftime.Janiewillthereforechooseto_________becausetheeconomicsurplusis________.
mowthelawn;
greaterB.
washclothes;
greaterC.
smallerD.
smaller
23.
Deandecidedtoplaygolfratherthanpreparefortomorrow'
sexamineconomics.Onecaninferthat:
Deanhasmadeanirrationalchoice.B.
Deanisdoingpoorlyinhiseconomicsclass.C.
theeconomicsurplusfromplayinggolfexceededthesurplusfromstudying.D.
thecostofstudyingwaslessthanthecostofgolfing.
Larrywasacceptedatthreedifferentgraduateschools,andmustchooseone.EliteUcosts$50,000peryearanddidnotofferLarryanyfinancialaid.LarryvaluesattendingEliteUat$60,000peryear.StateCollegecosts$30,000peryear,andofferedLarryanannual$10,000scholarship.LarryvaluesattendingStateCollegeat$40,000peryear.NoNameUcosts$20,000peryear,andofferedLarryafull$20,000annualscholarship.LarryvaluesattendingNoNameat$15,000peryear.
24.
TheopportunitycostofattendingEliteUis:
$50,000B.
$10,000C.
$20,000D.
$15,000
25.
TheopportunitycostofattendingStateCollegeis:
$30,000B.
$20,000C.
$15,000D.
$10,000
26.
Larrymaximizeshissurplusbyattending:
EliteU,because$60,000isgreaterthanthebenefitattheotherschools.B.
StateCollege,becausethedifferencebetweenthebenefitandcostisgreatestthere.C.
NoNameU,becauseLarryhasafullscholarshipthere.D.
EliteU,becausetheopportunitycostsofattendingEliteUarethelowest.
27.
LarryhasdecidedtogotoEliteU.Assumingthatallofthevaluesdescribedarecorrect,forLarrytodecideonEliteU,hemusthave:
calculatedhissurplusfromeachchoiceandpickedtheonewiththehighestsurplus.B.
underestimatedthebenefitsofattendingNoName.C.
miscalculatedthesurplusofattendingEliteU.D.
determinedtheopportunitycostofeachchoiceandpickedtheonewiththelowestopportunitycost.
28.
Jenspendsherafternoonatthebeach,paying$1torentabeachumbrellaand$11forfoodanddrinksratherthanspendinganequalamountofmoneytogotoamovie.Theopportunitycostofgoingtothebeachis:
the$12shespentontheumbrella,foodanddrinks.B.
only$1becauseshewouldhavespentthemoneyonfoodanddrinkswhetherornotshewenttothebeach.C.
themovieshemissedseeing.D.
themovieshemissedseeingplusthe$12shespentontheumbrella,foodanddrinks.
29.
Relativetoapersonwhoearnsminimumwage,apersonwhoearns$30perhourhas:
aloweropportunitycostofworkinglongerhours.B.
ahigheropportunitycostoftakingadayoff.C.
aloweropportunitycostofdrivingfarthertowork.D.
thesameopportunitycostofspendingtimeonleisureactivities.
30.
Theopportunitycostofanactivityisthevalueof:
analternativeforgone.B.
thenext-bestalternativeforgone.C.
theleast-bestalternativeforgone.D.
thedifferencebetweenthechosenactivityandthenext-bestalternativeforgone.
31.
Amyisthinkingaboutgoingtothemoviestonight.Aticketcosts$7andshewillhavetocancelherdog-sittingjobthatpays$30.Thecostofseeingthemovieis:
$7.B.
$30.C.
$37.D.
$37minusthebenefitofseeingthemovie.
32.
Economicsurplusis:
thebenefitgainedbytakinganaction.B.
thepricepaidtotakeanaction.C.
thedifferencebetweenthebenefitgainedandthecostincurredoftakinganaction.D.
thewagesomeon
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