单项选择题
The ocean bottom that extends from the shoreline out to an area where there is a marked change in slope to a greater depth is the（）.
A.abyssal plain B.continental shelf C.borderland D.offshore terrace
单项选择题 The length of a wave is the length（）.
单项选择题 The largest waves (heaviest chop) will usually develop where the wind blows（）.
单项选择题 The horse latitudes are characterized by（）.
