阿摩線上測驗
28 When arriving at a maritime collision, coast guards must first ________ the area to prevent further accidents involving people and nearby vessels.
(A) disturb
(B) leave
(C) observe
(D) secure
答案：登入後查看
統計： A(3), B(5), C(10), D(26), E(0) #3462282
統計： A(3), B(5), C(10), D(26), E(0) #3462282
