【题目】世界上人口自然增长率最高的大洲是（ ）
A.亚洲B.非洲
C.拉丁美洲D.大洋洲
【答案】B
【解析】
人口自然增长率是一定时期内 (通常为一年) 人口自然增加数 (出生人数减去死亡人数) 与同期平均总人口数之比，用千分数表示。人口自然增长率是反映人口自然增长的趋势和速度的指标。人口自然增长率水平取决于人口出生率和人口死亡率两者之间的变动情况。当人口出生率和人口死亡率都高，则人口自然增长率低；当人口出生率高，人口死亡率低，则人口自然增长率高；当人口出生率低，人口死亡率也低时，则人口自然增长率就低。20世纪以来，发达国家的人口自然增长率比较低，发展中国家的人口自然增长率比较高。
人口自然增长率是反映人口自然增长的趋势和速度的指标，20世纪以来，发达国家的人口自然增长率比较低，发展中国家的人口自然增长率比较高。世界上人口自然增长率最高的大洲是非洲。故选B。
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