【題目】某國(guó)家2016年年初共有人口500萬(wàn)人,該年內(nèi)出生并成活的嬰兒4.85萬(wàn)人,死亡人口5.2萬(wàn)人.據(jù)此回答下面小題.
【1】該國(guó)2016年的人口自然增長(zhǎng)率為( )
A. 20.1%B. ﹣0.07%C. ﹣0.7%D. 9.7%
【2】目前該國(guó)面臨的人口問(wèn)題可能是( )
A. 人口增長(zhǎng)過(guò)快,就業(yè)壓力過(guò)大
B. 環(huán)境惡化,住房緊張
C. 勞動(dòng)力短缺
D. 勞動(dòng)力過(guò)剩
【答案】
【1】B
【2】C
【解析】
人口的自然增長(zhǎng)主要是由出生率和死亡率決定的。人口自然增長(zhǎng)率與經(jīng)濟(jì)發(fā)展水平有密切聯(lián)系。近幾十年來(lái),隨著生活和醫(yī)療水平的提高,嬰兒死亡率逐漸降低,人的壽命不斷延長(zhǎng)。這樣就促使世界人口迅速增長(zhǎng);一般來(lái)說(shuō),經(jīng)濟(jì)發(fā)展水平高的國(guó)家,人口的自然增長(zhǎng)較慢;經(jīng)濟(jì)發(fā)展水平低的國(guó)家,人口的自然增長(zhǎng)較快,進(jìn)行分析解答。
【1】自然增長(zhǎng)率是指一年內(nèi)一定地區(qū)的自然增長(zhǎng)人口(出生人數(shù)減死亡人數(shù))與總?cè)丝谥龋匀辉鲩L(zhǎng)率=出生率﹣死亡率= ×100%﹣× ×100%=﹣0.07%。故選:B。
【2】人口的自然增長(zhǎng)主要是由出生率和死亡率決定的。題中某國(guó)家該年內(nèi)出生并成活嬰兒4.85萬(wàn)人,死亡人口5.2萬(wàn)人.說(shuō)明人口出現(xiàn)了負(fù)增長(zhǎng)現(xiàn)象。在歐洲的一些國(guó)家,比如意大利、德國(guó)和瑞典,近些年來(lái)人口一直處于負(fù)增長(zhǎng)狀態(tài),已引起勞動(dòng)力短缺、人口老齡化等問(wèn)題。故選:C。
考查人口自然增長(zhǎng)率的計(jì)算和人口問(wèn)題。
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