Aslifeexpectancyincreasesnowadays,theaveragepersonlives...
问题详情：Aslifeexpectancyincreasesnowadays,theaveragepersonliveswellbeyondtheageofretirement.Asaresult,theelderlymakeupanever-increasingpercentageofsociety,whichmakesitmoreimportantthaneverforarealeffo...