在全球空气污染最严重的10个大中城市中,北京排在第3位,其中机动车排放造成的污染就占整个空气污染的67%。因此,要在2008年以前实现蓝天绿地和绿色奥运的承诺,仍然任重道远。北京市科委有关人士近日透露,为了改进北京的大气质量,2004年下半年,将有20辆为北京奥运会设计、充分体 Among 10 cities with the most serious air pollution in the world, Beijing ranks third, with 67% of the total air pollution caused by motor vehicle emissions. Therefore, there is still a long way to go to achieve the promises of green space and green Olympics by 2008. Beijing Municipal Science and Technology Commission recently revealed that in order to improve Beijing’s air quality, in the second half of 2004, there will be 20 for the Beijing Olympic Games design, fully