阿摩線上測驗
47. How do dolphins call each other by name?
(A) They copy names from humans.
(B) They whistle a special sound.
(C) They respond to anything they hear.
(D) They don’t really have names.
答案：登入後查看
統計： A(40), B(1070), C(97), D(31), E(0) #2350379
統計： A(40), B(1070), C(97), D(31), E(0) #2350379
