阿摩線上測驗
48 In case of ______ , open the transparent plastic cover and press the red button to stop the escalator.
(A) calmness
(B) closure
(C) emergency
(D) tranquility
答案：登入後查看
統計： A(0), B(6), C(66), D(2), E(0) #2654294
統計： A(0), B(6), C(66), D(2), E(0) #2654294
