英语等级考试pets四级完形填空通关试题2017年英语等级考试pets四级完形填空通关试题我们全都要从前辈和同辈学习到一些东西。就连最大的天才，如果想单凭他所特有的内在自我去对付一切，他也决不会有多大成就。以下是小编为大家搜索整理的2017年英语等级考试pets四级完形填空通关试题，希望能给大家带来帮助!更多精彩内容请及时关注我们应届毕业生考试网!EXERCISE2TheCentralProblemofEconomicsThecentralproblemofeconomicsistosatisfythepeople'sandnation'swants.Theproblemwefacedwithisthatourresources,hereidentifiedasmoneyare_1__.Theonlywaywecansolvetheproblemisto_2__choices.Afterlookingatourresources,wemustexamineourlistof_3__andidentifythethingsweneedimmediately,_4_wecanpostpone,andthosewecannotafford.Asindividuals,wefacethecentralprobleminvolvedineconomics---decideinghowtoallocateourlimitedresourcesto_5__ourselveswithgreatestsatisfactionofourwants.Nationsface__6_problem.Asacountry'spopulation_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__theproducer'sextracost,and_18__taxpayerswhopayforthegovernment'sinvolvement_19__theenvironment.Inthe1990s,almostallgoodsarescares.Onlybyeffortandmoney_20__obtainedinthefrompeoplewish.1)AabundantBscarceClimitedDunlimited2)AhaveBdoCmakeDask3)AwantBresourcesCwantDproblem4)AsomeBothersCthatDthose5)AbringBprovideCtakeDsatisfy6)AanotherBthesameCtheotherDasame7)AgrowingBgrownCgrowsDgrow8)AsometimesBalwaysCoftenDnever9)AtakingplaceBhappe