![Aboutacenturyago,theaveragelife-span(寿命)forAmericanswas...]( "Aboutacenturyago,theaveragelife-span(寿命)forAmericanswas...")
- 问题详情：Aboutacenturyago,theaveragelife-span(寿命)forAmericanswasabout50years.Today,thetypicalAmericanlivesforaroundseventy-eightyears.AccordingtoaGermanagingstudy,themaximumlifespaninindustrializedcountrieshasincreasedbytwoyearseverydecadesincethemi...
- 24418
中文谷