阿摩線上測驗
5. Dogs are better able to complete certain tasks than their ancestor, the grey wolf, even when the wolf is brought up in a domesticated setting.
(A) wild
(B) housebroken
(C) natural
(D) similar
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統計： A(10), B(26), C(5), D(14), E(0) #1219755
統計： A(10), B(26), C(5), D(14), E(0) #1219755
