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Thelifeexpectancyisthelengthoftimethatapersonisnormally...
  • Thelifeexpectancyisthelengthoftimethatapersonisnormally...

  • 問題詳情:Thelifeexpectancyisthelengthoftimethatapersonisnormallylikelytolive.Asitincreasesnowadays,theAveragepersonlivesbeyondtheageofretirement.Asaresult,theelderlymakeupanever-increasingpercentageofsociety,whichmakesitmoreimportanttomakeefforttoimpr...
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