单项选择题
I have been instructed that on my voyage（），I shall call at Maderra to pick up some cargo.
A.home B.family C.China D.returning
单项选择题 I am ready（）tow line.
单项选择题 How should the letter O be pronounced when spoken on the radiotelephone?（）
单项选择题 How（）the cargo at loading port?
