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本帖最後由 leoyuchiu 於 2012-8-8 19:26 編輯
回復 KPS 的帖子
1. 情況冇你諗得咁差同埋中國太多人,一孩政策仍然好多人,用日本做例子,佢之前幾年係人口負增長,老化問題嚴重,但過左咁多年都未有真正問題,中國情況根本冇咁差,比d data大家睇,
Total fertility rate (女人生幾多小孩,正常average約1.5)
China: 1.55 children born/woman (2011 est.)
Japan: 1.39 children born/woman (2011 est.) <--極唔健康
Age structure
China
0-14 years: 17.6% (male 126,634,384/female 108,463,142)
15-64 years: 73.6% (male 505,326,577/female 477,953,883)
65 years and over: 8.9% (male 56,823,028/female 61,517,001) (2011 est.)
Japan
0-14 years: 13.1% (male 8,521,571/female 8,076,173)
15-64 years: 64% (male 40,815,840/female 40,128,235)
65 years and over: 22.9% (male 12,275,829/female 16,658,016) (2011 est.)
Birth rate
China: 12.31 births/1,000 population (2011 est.)
Japan: 8.39 births/1,000 population (2011 est.)
唔多講,請睇
http://www.indexmundi.com/china/demographics_profile.html
http://www.indexmundi.com/japan/demographics_profile.html
其他2345, 中國科技冇你諗得咁差,好簡單咁諗,US用5年諗隻新科技,中國而家有錢,可以save左5年就有人地用左5年就有既科技,雜交水稻係中國發明
中國同外國買石油其實係好大部份政治因素,之前US有份report都話過中國唔知收埋左幾多能源。科技其實遠比你expect既發展得快,糧食、能源唔會係毀滅性既危機
制度可以唔同,但係發展既過程唔會大變
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