单项选择题
A.synchronous rolling occurs B.roll period decreases C.roll period increases D.roll amplitude is dampened
In the Northern hemisphere northerly winds may cause te...
单项选择题In the Northern hemisphere northerly winds may cause temperature（）.
A.falling B.rising C.constant D.same
Which of the following is not a form of precipitation?（...
单项选择题Which of the following is not a form of precipitation?（）
A.rain B.frost C.sleet D.snow
Waves formed by the wind blowing far away are known as（...
单项选择题Waves formed by the wind blowing far away are known as（）.
A.sea B.current C.tide D.swell
