任务型阅读2请认真阅读下列短文，并根据所读内容在文章后表格中的空格里填入一个最恰当的单词。注意：每个空格只填1个单词。请将答案写在答题卷上相应题号的横线上。Aresocietiesageingtoofast?Anageingsocietyisoneinwhichthepopulationofpeopleovertheageof60isincreasing.Theglobalpopulationatpresentisabout6billionwith1personinevery10aged60orabove.TheUnitedNationsprojectsthatby2050,itwillbe1inevery5.Thiswillmeanthatforthefirsttimeinhumanhistorythepopulationofolderpersonswillbelargerthanthepopulationofchildren!Whatarethecausesofthispopulationchange?Onereasonisthatdramatichealthadvanceshaveadded20yearstotheaveragelife-expectancy,andanotheristhatbirthrateshavedroppedaspeople,especiallywomen,areeducated.MeasurestoslowpopulationgrowthlikeChina’sone-childpolicy,havealsocontributedtoloweredbirthrates.Theincreaseintheagedpopulationisnotjustaninterestingtrendhowever;italsohassevereimplicationsforthefutureofglobaleconomies.Peopletraditionallyretireat65andliveongovernmentpensions.Aspeoplegrowolder,ahugefinancialburdenwillbeplacedonthegovernment.Anotherconcernisthatasmedicalexpensesincreasewithage,thedemandsofthegrowingagedpopulationwilleventuallycausemedicalschemestofacebankruptcy.Expertsinsistedthatstepsshouldbetakennowtoprepareforthefuture.Theysuggestthatbecausepeoplearelivinglonger,theyoughttoworklonger,whilegovernmentsneedtoestablishasoundsocialsecuritysystem.Theyalsosuggestthatindividualsstartsavingassoonaspossibletoensureafinanciallysecureretirement.Peopleshouldalsodevelopgoodhealthhabitsintheiryouthtoensureanactiveandproductiveoldage.Biomedicalresearchisanothertoolwecanusetotackletheproblemsofageingsocieties.ByfindingcuresfordiseaseslikeAlzheimer’sandcancer,medicalbillsandtheneedforcarewouldbedrasticallyreduced.Finally,animportantsteptoensureabrightfutureforallistodoawaywithnegativestereotypesthatseevaluablemembersofsocietyonlyaspensionersorpatients.It’shightimewestoppedseeingageingasadiseaseandstartedplayingourpartsinsecuringthefutureofourageingsocieties.Aresocietiesageingtoofast?·Theaveragelife-expectancyhasbeenmuchlongerthanbefore(78)todramatichealth