题目内容

【题目】下图为我国部分省区2005～2010年人口净迁移率(迁入率与迁出率之差，正数表示人口净迁入。反之为净迁出)与人口自然增长率分布图。读图，完成下列各题。

【1】下列有关我国部分省区2005～2010年人口变化状况的叙述，正确的是

①江西省净迁入人口数增加 ②天津人口增长率大于四川

③广东自然增长人口数大于净迁入人口数 ④贵州人口净减少

A．①② B．③④ C．②③ D．①④

【2】图中人口数量的变化

A．使北京、上海、天津城市用地面积增大

B．引起江西、贵州的人口合理容量增大

C．增强了广东、浙江第一产业的活力

D．使北京、上海人口老龄化问题更加严重

【答案】

【1】C

【2】A

【解析】

试题分析：

【1】读图，根据材料信息，江西省净迁迁率小于0，表示迁入人口数少，是净迁出，①错。天津净迁入率和自然增长率都大于0，人口增加率数值大，而四川人口净迁移率小于0，自然增长率大于0，人口增长率较小。所以天津的人口增长率大于四川，②对。结合图中数值，广东自然增长率7，人口净迁入率约是1，自然增长人口数大于净迁入人口数，③对。贵州人口自然增长率超过7，远大过人口净迁入率，贵州人口增加的多，④错。C对。

【2】图中北京、上海、天津人口增加率都大于0，人口增长快，城市规模扩大，用地面积增大，A对。影响人口容量的主要因素是资源、科技水平、对外开放度和消费水平，人口数量不是影响人口的合量容量的因素，B错。第一产业是农业，广东、浙江外来人口多，主要是进入城市务工的，主要从事第二、三产业，C错。进入北京、上海的外来人口，多为青、壮年，不会加剧老龄化，D错。

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