阿摩線上測驗
34. When the radar detected an unidentified vessel entering restricted waters, the coast guard operator immediately issued a(n) ________ to all nearby patrol boats.
(A) avert
(B) alert
(C) alien
(D) assertion
答案：登入後查看
統計： A(0), B(1), C(0), D(0), E(0) #3930867
統計： A(0), B(1), C(0), D(0), E(0) #3930867
