阿摩線上測驗
9 Water _____ and crop failures would cause food shortage and unprecedented movements of people across national borders.
(A) endurance
(B) scarcity
(C) affluence
(D) filtration
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統計： A(2), B(7), C(1), D(0), E(0) #3664307
統計： A(2), B(7), C(1), D(0), E(0) #3664307
