【请英文好的朋友帮助修改一下英文小短文.Nowadays,withrapidurbanization,expertspredictthat50%ofpeopleliveincities.Itispredictedthatthestatisticwillincreaseto70%by2050.Althoughtherearemanyslumareaswhichcan'teven】

　　请英文好的朋友帮助修改一下英文小短文.

　　Nowadays,withrapidurbanization,expertspredictthat50%ofpeopleliveincities.Itispredictedthatthestatisticwillincreaseto70%by2050.

　　Althoughtherearemanyslumareaswhichcan'tevenprovideahealthyenvironmentwithfacilitieslikedrinkingwaterandsanitation,thesizeofurbanisationindevelopingcountriesareunprecedented.

　　Comparedtoruralareas,theinfrastructureandservicesarequitegoodinurbanareas,whichhascausedasignificantpercentageofthepopulationmigratedfromruralareastourbanareastoseekbetterjobopportunityandlivingstandards.Alotofcitieshavebecomemegacitieswiththeproportionofmorethan10million.ThemostsignificantpopulationsoarsareLondon,Shanghai,Tokyoandsuch.

　　Accordingtostatistics,10%ofworld’spopulationliveinmegacities.Thishascausedseriousissuessuchastrafficjamandenvironmentalpollution.

　　Inconclusion,megacitiesareoneofthemajorissuesofthe21stcentury.