阿摩線上測驗
47 The growth of Scandinavian population in the 9th century mainly lies in ____ .
(A) the stability of the climate
(B) the increase of food
(C) the decrease of old people
(D) the expansion of the territory
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統計： A(28), B(45), C(19), D(16), E(0) #1121020
統計： A(28), B(45), C(19), D(16), E(0) #1121020
