单项选择题
The Brazil Current flows in which general direction? （）
A.Northwesterly B.Southwesterly C.Southerly D.Northerly
单项选择题 The best time to work a boat into a slip is（）.
单项选择题 The Benguela Current flows in a（）.
单项选择题 Swell is the rise and fall of the ocean’s surface due to（）.
