| 摘 要： | According to Xinhua News, as of the end of 2009, the actual permanent population of Beijing had reached 19.72 million, including the household population of 12.46 million and the floating population of 7.264 million living in the city for more than half a year. Immnigration of the whole family had been seen annual increases, taking a proportion of 41.2%. The rapid population growth had brought stresses to Beijing on its water resources, energy consumption, transportation as well as such problems as shortage of food,
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