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1、I1完形填空I1[2015·广东卷]Howlongcanhumanbeingslive?Mostscientistswhostudyoldagethinkthatthehumanbodyis__1__tolivenolongerthan120years.However,110yearsisprobablythelongestthatanyonecouldhopetolive—ifheorsheis__2__healthyandlucky.Somescientistsevensaywecanliveaslon
2、gas130years!Yet,ourcellssimplycannotcontinuetoreproduce__3__.Theywearout,andasaresult,wegetoldand__4__die.Eventhoughwecan'tliveforever,wearelivinga__5__lifethaneverbefore.In1900,theaverageAmericanlifespan(寿命)wasonly47years,buttodayitis75years!Whendoesoldag
3、ebeginthen?Sixtyfivemaybeoutofdateasthe__6__linebetweenmiddleageandoldage.Afterall,manyolderpeopledon'tbegintoexperiencephysicalandmental__7__untilafterage75.Peoplearelivinglongerbecausemorepeople__8__childhood.Beforemodernmedicinechangedthelawsofnature,ma
4、nychildrendiedofcommonchildhood__9__.Nowthatthechancesofdying__10__aremuchlower,thechancesoflivinglongaremuchhigherduetobetterdietsandhealthcare.Onthewhole,ourpopulationisgettingolder.The__11__inourpopulationwillhavelastingeffectsonoursocialdevelopmentando
5、urwayoflife.Somepeoplefearsuchchangeswillbefortheworse,whilesomesee__12__,notdisaster.Today,manymenandwomenintheir“goldenyears”arehealthy,stillactive,andyoungin__13__ifnotinage.Asoursocietygrowsold,weneedthe__14__ofouroldercitizens.Withlonglivesaheadofthem
6、,theyneedto__15__activeandbedevoted.1．A.designedB．selectedC．improvedD．discovered2．A.completelyB．generallyC．apparentlyD．extremely3．A.rapidlyB．harmlesslyC．endlesslyD．separately4．A.eventuallyB．hopelesslyC．automaticallyD．desperately5．A.busierB．longerC．richerD．
7、happier6．A.finishingB．guidingC．waitingD．dividing7．A.stressB．damageC．declineD．failure8．A.surviveB．enjoyC．rememberD．value9．A.problemsB．fearsC．worriesD．diseases10．A.poorB．youngC．sickD．quiet11．A.changesB．recoveryC．safetyD．increases12．A.dreamsB．chancesC．strengt
8、hsD．choices13．A.mindB．appearanceC．voiceD．movement14．A.protectionB．suggestionsC．contributionsD．permission15．A.soundB．appearC．turnD．stay【要点综述】这是一篇说明文.文章主要介绍了人的寿命是有限的,但是随着社会的发展,人们生活水平的提高,人们的寿命比以前更长了,而且老龄化已经成为社会的
