21.翻譯：本船已與海岸電台建立無線電聯繫。
(A)We have radio contact on coast radio station.
(B)We have radio contact with coast radio station.
(C)We have radio contact at coast radio station.
(D)We have radio contact by coast radio station.

答案：登入後查看
統計： A(2), B(12), C(1), D(1), E(0) #2400662