阿摩線上測驗
48. Why was the baby’s introduction to other orangutans difficult?
(A)He was physically weaker than the others.
(B)He had never learned orangutan social behaviors.
(C)The other orangutans were all aggressive.
(D)He preferred staying alone with his toy.
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統計： A(0), B(13), C(2), D(0), E(0) #3910159
統計： A(0), B(13), C(2), D(0), E(0) #3910159
