Drawing upon data from China Health and Nutrition Survey(CHNS) 2009,this paper analyzes health status and its determinants of 1291 children under age 18 using OLS/quartile regression.Results show that child′s sex and the proportion of male children in the family significantly associated with child health.After controlling for physiological and genetic factors,geographic location of the family,the family′s long-term welfare level,father′s education level,types of occupations of the parents and age of children are significantly affecting child health.

 By examining population growth after 1958 in each region of Beijing and population by current residence and usual residence 5 years ago in each region of Beijing at the Fourth and Fifth National Population Census,this article explores the question if the City of Beijing has stepped into the stage of suburbanization,arguing that it is inappropriate to view Urban Function Extended Region totally as the suburbs or the city proper.It is necessary to differentiate the population pertaining to township,town and urban subdistrict in order to look at separately the suburbs and the city proper within the Urban Function Extended Region.As the population growth rate of Core Region of Capital Function has declined,the population growth rates of both Urban Function Extended Region including the near suburbs and New Region of Urban Development located in the outer suburbs have increased since the 1980s,and the population growth rate of New Region of Urban Development has surpassed that of Urban Function Extended Region in recent years,the article claims that the urbanization process of Beijing has entered into the suburbanization stage.

The present article makes a clustering analysis of urban size structures of provinces and autonomous regions in China in 1999 .The result of the analysis demonstrates that, urban size structures of many provinces and autonomous regions have some shortcomings, and there are certain differences among urban size structures of the three large regions .The article argues that , in the 21 century , the focal points of the development of the three large regions' urban size structures should be different based on each region' s feature , and whether in the Eastern Coastal Region , the Middle Region, or in the Western Region, the development of large cities should be and must be given priority .China needs to develop urban systems in which the structure of cities and towns of various sizes is reasonable and the whole urban function can be brought into full play .