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英语阅读题目

EXERCISETheCentralProblemofEconomicsThecentralproblemofeconomicsistosatisfythepeoplesandnationswants.Theproblemwefacedwithisthatourresources,hereidentifiedasmoneyare_1__.Theonlywaywecansolvetheproblemisto_2__choices.Afterlookingatourresources,wemustexamineourlistof_3__andidentifythethingsweneedimmediately,_4_wecanpostpone,andthosewecannotafford.Asinpiduals,wefacethecentralprobleminvolvedineconomics---decideinghowtoallocateourlimitedresourcesto_5__ourselveswithgreatestsatisfactionofourwants.Nationsface__6_problem.Asacountryspopulation_7__,theneedformoregoodsandservicesgrowscorrespondingly.Resourcesnecessarytoproductionmayincrease,butthere_8__areenoughresourcestosatisfythetotaldesiresofanation.Whetherthebudgetmeetingis_9__inthefamilylivingroom,intheconferenceroomofthecorporation__10_ofdirectors,orinthechamberoftheHouseofRepresentativesinWashington,thebasicproblemstillexists.Weneedtofind_11__ofallocatinglimitedresourcesinordertosatisfyunlimitedwants.Ashorttimeago,economists_12__goodsintotwocategories,freeandeconomic.Theformer.,likeairandwater,werein_13__abundancethateconomistshadnoconcernforthem.Afterall,economistsisthe_14__ofscarcityandwhattodoaboutit.Todaymanyofthese"freegoods"are_15__veryexpensivetouse.Populationhasmadecleanairandwater_16__forproducerswhohavetofiltertheirwasteproducts,forconsumerswhoultimately_17__theproducersextracost,and_18__taxpayerswhopayforthegovernmentsinvolvement_19__theenvironment.Inthe1990s,almostallgoodsarescares.Onlybyeffortandmoney_20__obtainedinthefrompeoplewish.1)AabundantBscarceClimitedDunlimited2)AhaveBdoCmakeDask3)AwantBresourcesCwantDproblem4)AsomeBothersCthatDthose5)AbringBprovideCtakeDsatisfy6)AanotherBthesameCtheotherDasame7)AgrowingBgrownCgrowsDgrow8)AsometimesBalwaysCoftenDnever9)AtakingplaceBhappeningCreplacingDtakingtheplace10)AboardBgroupCmanagementDfunction11)AmeansBapproachCwaysDmethod&nbsp;12)AseperateBpideCcutDpided13)AasoBgreatCsuchDsuchan14)AstudyBformCmeansDsource15)AparticularlyBinpracticeCpracitallyDinreali