单项选择题
Anchoring and fishing in this area are（）.
A.danger B.dangerous C.dangerously D.dangering
单项选择题 An example of an anchor which has a stock is a（）.
单项选择题 After casting off moorings at a mooring buoy in calm weather，you should（）.
单项选择题 A vessel moored with two anchors，sometimes，at an exposed roadstead to（）.
