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    【题目】有关我国人口与民族的说法，正确的是（　　）

    A.漠河﹣﹣腾冲一线是我国的人口地理分界线

    B.全面二孩政策的实施有利于缓解我国的人口老龄化现象

    C.我国有56个民族，其中，壮族是我国人口最多的民族

    D.“大聚居，小散居，交错杂居”是我国民族分布的基本特点

    【答案】B

    【解析】

    A、中国人口地区分布不均。一般来说，以黑河-腾冲线为界，东部地区人口多，西部地区人口少，A错误；

    B、全面二孩政策的实施有利于缓解我国的人口老龄化现象，促进我国人口的合理发展，B正确；

    C、中国是一个团结统一的多民族大家庭，有汉、壮、蒙古、回、藏、维吾尔、苗等56个民族。各民族中，汉族人数最多，约占全国人内口总数的91.5%；其他民族人口总数约占8.5%，统称为少数民族。壮族是我国人口最多的少数民族，C错误；

    D、中国各民族分布的特点是“大散居，小聚居，交错杂居”。汉族分布最广，主要集中在东部和中部地区；少数民族则主要分布在西南、西北和东北部地区，D错误；

    故选B。

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