公共英语阅读完型作文

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1、天一文化教育集团·锐志文化2010年天一文化命题预测大串讲考前密押密押版严禁转让、销售，发现后追究责任！阅读理解和完形填空部分(一)Therateofpopulationgrowthisfastestinunderdevelopedcountries.Inthesecountriesahighbirthrateisaccompaniedbyalowereddeathratethankstoimprovedstandardsofpublichealth.Ideallyitshouldbepossible

2、tocounterbalancetheeffectofareduceddeathratebyanincreaseduseoffamilyplanning.Inpractice,however,populationcontrolisacomplexmatter.Throughouthistorypeoplehavedeterminedthesizeoftheirfamiliesaccordingtotheculturalvaluesoftheirsocieties.Populationcontrolha

3、slongbeenasubjectofdiscussionamongresearchers.Somehavearguedthatthesupplyofgoodlandislimited.Inordertofeedalargepopulation,badlandmustbecultivatedandthegoodlandoverworked.Asaresult,eachpersonproduceslessinagivenamountoftimeandthismeansaloweraverageincom

4、ethancouldbeobtainedwithasmallerpopulation.Otherresearchershavearguedthatalargepopulationgivesmorescopeforthedevelopmentoffacilitiessuchassports,roadsandrailways,whicharenotlikelytobebuiltunlessthereisabigdemandtojustifythem.Similarly,itcanbearguedthatt

5、hepubliccostsofsocietywillnotbesoheavytoeachindividualiftheyaresharedamongthemembersofalargepopulation.Oneofthedifficultiesinimplementingbirthcontrolliesinthefactthattheofficialattitudestopopulationgrowthvaryfromcountrytocountry.Inunderdevelopedcountrie

6、swherealargepopulationispressingharduponthelimitsoffood,spaceandnaturalresources,itwillbethefirstconcernofgovernmenttoplacealimitonthebirthrate.Inawelldevelopedsocietytheproblemmaybemorecomplex.Adecliningbirthratemayleadtounemploymentbecauseitresultsin

7、ashrinkingmarket.Citieswithadecliningpopulationmayhavetofacetheprospectofashrinkingtaxbaseandafallinlandvalues.Iftherearefewerchildrengoingtoschool,teachersmaybethrownoutofwork.Whenthepressureofpopulationonhousingdeclines,pricesalsodeclineandthebuilding

8、industryisweakened.Facedwithconsiderationssuchasthese,thegovernmentofadevelopedcountrymaywellprefertoseeaslowlyincreasingpopulation,ratherthanonewhichisstableorindecline.1.Onereasonforquickpopulationincreaseinunderdevelopedcountr