2016年6月英语四级考试：仔细阅读练习(5)思维导图
The future population will be older than today, and this in turn will change the patterns of social demands. However, Mexico will still be far from the "aging societies" that will
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2016年6月英语四级考试：仔细阅读练习(5)思维导图模板大纲
Thefuturepopulationwillbeolderthantoday,andthisinturnwillchangethepatternsofsocialdemands.However,Mexicowillstillbefarfromthe"agingsocieties"thatwillmostlikelyprevail(占优势)intheindustrializedcountries.Inlessthan25years,thecountrywillhavetoaddalmostasmuchinfrastructureasithasalreadybuiltuptonow,simplytomaintainservicesandproductionatthecurrentlevels.Thiswillbeatremendouschallenge,althoughasimilaronewasfacedsuccessfullyintherecentpast,whenavailableinfrastructurewasdoubledintwodecadesorso.ItisnowonderthatmuchhasbeensaidabouttheneedtoreduceorpreferablyhaltMexico'spopulationcontrolwhichistakenforgrantedasbothgoodandnecessary.Ithasalsogainedsupportersinthedevelopingworld,andMexicoisnoexception.Buttheargumentsaboutpopulationarecomplicated,asthefollowingdiscussionillustrates.
EvenifMexico'spopulationreaches125millionbytheyear2010,itspopulationdensityisstillsmallerthanthe1985populationdensityofsome50countries.ByinternationalstandardsMexicowillstillnotbeoverpopulatedbytheyear2010.Ifwealthisgeneratedbypeople,themoreindividualsthereare,thegreaterthewealththatpotentiallycouldbegenerated.WhyshouldMexicocontrolitspopulationatdensitylevelsbelowthoseoftherichercountriesifmorepopulationrepresentsthepossibilityofgeneratingmorewealth?
Ontheotherhand,itisoftenpointedoutthatoncesustainability(支撑力)limitsarenearorarereached,therearedecreasingproductivitygains(or,perhapsmoreaccurately,increasingproductivelosses),andpeoplebecomeacostratherthananasset.Ifweassumethattherearesustainabilitylimitsandthatweareclosetoreachingtheselimitsataworldlevel,thenitisappropriatetocheckpopulationgrowth.
21.Accordingtothepassage,thepopulationargumentisfocusedon_______.
A.whethermorepeopleareapropertyoracost
B.whetherMexicoshouldcontrolitspopulationgrowthornot
C.whetherthedensityofpopulationinMexicoislargeorsmall
D.whatthestandardinternationalsustainabilitylimitis
22.WhichofthefollowingisTRUEaccordingtothefirstparagraph?
A.Mexicohassteppedintoanagingsociety.
B.ItisnotnecessaryforMexicotocontrolitspopulation.
C.Mexicopopulationisyoungerthanthatofdevelopedcountries.
D.ItisnotnecessaryforMexicotodevelopitsinfrastructure.
23.By"infrastructure"(Para.2)theauthormeans_______.
A.buildings
B.thebasicframeworkofacountry,suchasschools,services,etc.
C.socialdemands
D.servicesandproduction
24.Itmaybeinferredfromthe3rdparagraphthat_______.
A.itisn'tnecessaryforMexicotocontrolitspopulationgrowth
B.populationislikelytogrowataslowerpacethaninthepast
C.themorepeoplethereare,thegreaterthewealthpeoplecouldgenerate
D.Mexicoshouldcontrolitspopulationgrowthbecauseshebelongstothedevelopingcountries
25.Tocheckpopulationgrowthisnecessarywhen_______.
A.therearedecreasingproductivitygains
B.thereareincreasingproductivitylosses
C.weareclosetoreachingthesustainabilitylimitsataworldlevel
D.peoplebecomeacost
答案：21.B22.C23.B24.A25.C
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