问题标题：
【英语急救,综合填空（1）Today,thepopulationoftheworldisg___fasterandfaster,anditmaybethebiggestp________.Butthousandsofyearsago,thepopulationwasverysmall,anditgrewverys_____,ithasgrownveryfastonlyduringthel_】
问题描述：
英语急救,
综合填空
（1）Today,thepopulationoftheworldisg___fasterandfaster,anditmaybethebiggestp________.Butthousandsofyearsago,thepopulationwasverysmall,anditgrewverys_____,ithasgrownveryfastonlyduringthel_______threeorfourhundredyears.Now,itisgrowingfasterthanbefore.Theworld'spopulationhasalreadyr_____sixbillionbytheendofthetwentiethc_____,anditmaybeo____sevenbillioninabout10years.Sosomethingmustbedonetos_____itfromgrowing,orthe____willnotbeenoughs_____eventostandinontheearth.
李健回答：
growing增长
problem问题
slowly缓慢
last刚刚过去的
reached达到
century世纪
over超过
stop阻止
there将会没有
space空间
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