26 Demographers study population growth or decline and things like _______ , which means the movement of populations into cities.
(A)classification
(B)normalization
(C)industrialization
(D)urbanization

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統計: A(3), B(3), C(2), D(19), E(0) #1210128

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#2611400
Demographers 人口統計學家A...
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