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1、高考“题练”英语阅读分类集锦之说明文阅读17 【第二教育资源网www.02edu.com—高考英语试题】 以下是小编为各位同学整理的高三英语复习阅读理解类近十年高考优题，希望可以帮助到大家! C7[2014·江苏卷] B Howeverwealthywemaybe,wecanneverfindenoughhoursinthedaytodoeverythingwewant.Economicsdealswiththisproblemthroughtheconceptofopportunitycost,whichsimplyreferstowhethers
2、omeone’stimeormoneycouldbebetterspentonsomethingelse. Everyhourofourtimehasavalue.Foreveryhourweworkatonejobwecouldquiteeasilybedoinganother,orbesleepingorwatchingafilm.Eachoftheseoptionshasadifferentopportunitycost—namely,whattheycostusinmissedopportunities. Sayyouintendtowatchafoo
3、tballmatchbuttheticketsareexpensiveanditwilltakeyouacoupleofhourstogettoandfromthestadium.Whynot,youmightreason,watchthegamefromhomeandusetheleftovermoneyandtimetohavedinnerwithfriends？This—thealternativeuseofyourcashandtime—istheopportunitycost. Foreconomists,everydecisionismadebykn
4、owledgeofwhatonemustforgo—intermsofmoneyandenjoyment—inordertotakeitup.Byknowingpreciselywhatyouarereceivingandwhatyouaremissingouton,yououghttobeabletomakebetterinformed,morereasonabledecisions.Considerthatmostfamouseconomicruleofall：there’snosuchthingasafreelunch.Evenifsomeoneoffers
5、totakeyououttolunchforfree,thetimeyouwillspendintherestaurantstillcostsyousomethingintermsofforgoneopportunities. Somepeoplefindtheideaofopportunitycostextremelydiscouraging:imaginespendingyourentirelifecalculatingwhetheryourtimewouldbebetterspentelsewheredoingsomethingmoreprofitable
6、orenjoyable.Yet,inasenseit’shumannaturetodopreciselythat—weassesstheadvantagesanddisadvantagesofdecisionsallthetime. Inthebusinessworld,apopularphraseis“valueformoney”．Peoplewanttheircashtogoasfaraspossible.However,anotherisfastobtaininganadvantage：“valuefortime”.Thebiggestrestrictio
7、nonourresourcesisthenumberofhourswecandevotetosomething,sowelooktomaximizethereturnwegetonourinvestmentoftime.Byreadingthispassageyouaregivingoverabitofyourtimewhichcouldbespentdoingotheractivities,suchassleepingandeating.Inreturn,however,thispassagewillhelpyoutothinklikeaneconomist,c
8、losel
