![Aging of Population in China作文]( "Aging of Population in China作文")
- Manycountrieswillexperienceagingpopulationsinthenextcenturybecauseofdecliningbirthandmortalityrates.Chinawillsoonjointheirranks.Accordingtostatistics,theagingofChina'spopulationwillapproachitspeakbythemiddleofthenextcentury,withthepercentageofthe...
- 18135
文章录