摘要
Government institutions have been called on to im-prove urban air quality in a bid to create a healthier en-vironment for people. On April 6～7, Vice Premier Li Lanqing made an important speech on the national con-ference of "Air Purification Programme——cleaning motor vehicle operation", he said that the improvement should start with accelerated development of cleaner fu-els and reducing pollution exhausted from motor vehi-cles. Industrial and domestic coal-burning and vehicle e-missions have produced large amounts of pollutants in-cluding sulphur dioxide, dust and nitrogen oxide. Air pollution has become a major factor which
