单项选择题
When approaching Block Island Sound from Long Island Sound，you will enter waters governed by the International Rules of the Road when you（）.
A.pass through The Race B.cross the territorial sea boundary C.exit Block Island Sound to the east or south D.None of the above，as Long Island Sound is governed by the International Rules of the Road
单项选择题 Two vessels are approaching each other near head on. What action should be taken to avoid collision?（）.
单项选择题 The term of Landfall means（）.
单项选择题 The rules state that vessels may depart from the requirements of the Rules when（）.
