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【題目】下圖為我國部分省區2005～2010年人口凈遷移率(遷入率與遷出率之差，正數表示人口凈遷入。反之為凈遷出)與人口自然增長率分布圖。讀圖，完成下列各題。

【1】下列有關我國部分省區2005～2010年人口變化狀況的敘述，正確的是

①江西省凈遷入人口數增加 ②天津人口增長率大于四川

③廣東自然增長人口數大于凈遷入人口數 ④貴州人口凈減少

A．①② B．③④ C．②③ D．①④

【2】圖中人口數量的變化

A．使北京、上海、天津城市用地面積增大

B．引起江西、貴州的人口合理容量增大

C．增強了廣東、浙江第一產業的活力

D．使北京、上海人口老齡化問題更加嚴重

【答案】

【1】C

【2】A

【解析】

試題分析：

【1】讀圖，根據材料信息，江西省凈遷遷率小于0，表示遷入人口數少，是凈遷出，①錯。天津凈遷入率和自然增長率都大于0，人口增加率數值大，而四川人口凈遷移率小于0，自然增長率大于0，人口增長率較小。所以天津的人口增長率大于四川，②對。結合圖中數值，廣東自然增長率7，人口凈遷入率約是1，自然增長人口數大于凈遷入人口數，③對。貴州人口自然增長率超過7，遠大過人口凈遷入率，貴州人口增加的多，④錯。C對。

【2】圖中北京、上海、天津人口增加率都大于0，人口增長快，城市規模擴大，用地面積增大，A對。影響人口容量的主要因素是資源、科技水平、對外開放度和消費水平，人口數量不是影響人口的合量容量的因素，B錯。第一產業是農業，廣東、浙江外來人口多，主要是進入城市務工的，主要從事第二、三產業，C錯。進入北京、上海的外來人口，多為青、壯年，不會加劇老齡化，D錯。

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