![Thelifeexpectancyisthelengthoftimethatapersonisnormally...]( "Thelifeexpectancyisthelengthoftimethatapersonisnormally...")
- 问题详情：Thelifeexpectancyisthelengthoftimethatapersonisnormallylikelytolive.Asitincreasesnowadays,theAveragepersonlivesbeyondtheageofretirement.Asaresult,theelderlymakeupanever-increasingpercentageofsociety,whichmakesitmoreimportanttomakeefforttoimpr...
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