I have lived inBeijing for 25years.It is indisputable that the air quality here has significantlyimprovedoverthese years.I still remember when I first moved to China in 1998,the main source of air pollution in Beijing...I have lived inBeijing for 25years.It is indisputable that the air quality here has significantlyimprovedoverthese years.I still remember when I first moved to China in 1998,the main source of air pollution in Beijing was coal burning.Soon,in 1999,the Beijing Municipal Government introduced supervisory regulations on the quality of coal use.展开更多
文摘I have lived inBeijing for 25years.It is indisputable that the air quality here has significantlyimprovedoverthese years.I still remember when I first moved to China in 1998,the main source of air pollution in Beijing was coal burning.Soon,in 1999,the Beijing Municipal Government introduced supervisory regulations on the quality of coal use.
