阿摩線上測驗
46. What does the underlined bold word “vigilant” in the last paragraph most likely mean?
(A) Happy and friendly
(B) Careful and watchful
(C) Busy and distracted
(D) Young and energetic
答案：登入後查看
統計： A(5), B(52), C(3), D(8), E(0) #3492454
統計： A(5), B(52), C(3), D(8), E(0) #3492454
