82. What does the dependency ratio mean？
(A) Population over 65 years old to working age population.
(B) Population aged 0-14 years to total population.
(C) Population aged 0-14 years and over 65 to the total population.
(D) Population aged 0-14 and over 65 working age population.
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依賴人口：即14歲以下幼年人口及65歲以...
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82. What does the d...
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