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【题目】某国家2016年年初共有人口500万人,该年内出生并成活的婴儿4.85万人,死亡人口5.2万人.据此回答下面小题.

1该国2016年的人口自然增长率为(  )

A. 20.1%B. ﹣0.07%C. ﹣0.7%D. 9.7%

2目前该国面临的人口问题可能是(  )

A. 人口增长过快,就业压力过大

B. 环境恶化,住房紧张

C. 劳动力短缺

D. 劳动力过剩

【答案】

1B

2C

【解析】

人口的自然增长主要是由出生率和死亡率决定的。人口自然增长率与经济发展水平有密切联系。近几十年来,随着生活和医疗水平的提高,婴儿死亡率逐渐降低,人的寿命不断延长。这样就促使世界人口迅速增长;一般来说,经济发展水平高的国家,人口的自然增长较慢;经济发展水平低的国家,人口的自然增长较快,进行分析解答。

1自然增长率是指一年内一定地区的自然增长人口(出生人数减死亡人数)与总人口之比.自然增长率=出生率﹣死亡率= ×100%﹣× ×100%=0.07%。故选:B

2人口的自然增长主要是由出生率和死亡率决定的。题中某国家该年内出生并成活婴儿4.85万人,死亡人口5.2万人.说明人口出现了负增长现象。在欧洲的一些国家,比如意大利、德国和瑞典,近些年来人口一直处于负增长状态,已引起劳动力短缺、人口老龄化等问题。故选:C

考查人口自然增长率的计算和人口问题。

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