2017年12月大学英语四级仔细阅读练习（3）思维导图

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2017年12月大学英语四级仔细阅读练习（3）思维导图

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　　新东方网英语四级频道为大家整理了英语四级仔细阅读练习题库，希望可以为大家带来帮助，预祝大家顺利通过2017年12月大学英语四级考试。

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新东方网英语四级频道为大家整理了英语四级仔细阅读练习题库，希望可以为大家带来帮助，预祝大家顺利通过2017年12月大学英语四级考试。

2017年12月大学英语四级仔细阅读练习题库

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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