关于Theanswerhaschangedo的百科

• Howoldis“old”?Theanswerhaschangedovertheyears.TwoHundre...

• 问题详情：Howoldis“old”?Theanswerhaschangedovertheyears.TwoHundredyearsago,youwereoldat35.Atthebeginningofthe20thcentury,theaveragelifespan(平均寿命)was45.In1950,70-year-oldswerereallyold.Today，ahealthy70-year-oldisstillthoughtyoung.      So,how...
• 2019-05-1517935