Objective To survey the current status and distribution of deafness and its effect on daily life activities in the old population.
目的研究老年聋在老年人群中的现状、分布特点以及对日常生活功能的影响。
Using data from the 2000 population census, this paper describes the basic characteristics of the children left behind: their size, structure, distribution, family, and educational status.
利用2 0 0 0年人口普查抽样数据，本文对我国留守儿童的规模、结构、分布、家庭类型和受教育状况等基本情况进行了研究。
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