送交者: kma 于 2011-03-04, 09:57:40:
回答: 你知道吗？上海人平均寿命82岁 居全中国最高水平 由 3747 于 2011-03-04, 09:45:26:
air quality is 1 factor, but there are others also crucial to life expectancy, medical care as the most.
HK dosen't have a great air, rarely sees blue sky and clouds, yet it ranks near the top of the world on life longetivity.
recently i went back to china, to my surprise among 3 palces i visited, only BJ had blue sky