<a class="" title="" href="../../../population/2011-05/31/content_22677214.htm" target="_blank">2050年中国流动人口可达3.5亿</a> <a class="" title="" href="../../../population/2011-05/31/content_22677228.htm" target="_blank">北京人户分离人口超345万</a> _中国发展门户网