单项选择题
---Ease to five! ---Reply: Ease to five! ---Report: （）.
A. Ease to five B. Port five C. Five D. Yes
--- Starboard twenty! ---Reply: Starboard twenty! ---Re...
--- Starboard twenty! ---Reply: Starboard twenty! ---Report: （）
A. Twenty starboard. B. Wheel is starboard twenty. C. Twenty. D. OK!
---Midship! ---Reply: （） ---Report: Wheel midship. A...
---Midship! ---Reply: （） ---Report: Wheel midship.
A. OK ! B. Yes! C. Midship! D. Got it!
---Starboard 10! ---（）! A. Wheel starboard tenB. Sta...
---Starboard 10! ---（）!
A. Wheel starboard ten B. Starboard 10 C. Starboard is10 D. Here it goes
