单项选择题
The place where a channel moves from along one bank of the river over to the other bank of the river is called a（）.
A.draft B.cutoff C.draw D.crossing
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（）.
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（）.
