阿摩線上測驗
5 Dolphin sounds are unintelligible to humans because they cover a larger range of frequencies than we can
hear or _______.
(A) substantiate
(B) extinguish
(C) dismantle
(D) differentiate
答案：登入後查看
統計： A(2), B(2), C(1), D(6), E(0) #2455535
統計： A(2), B(2), C(1), D(6), E(0) #2455535
