单项选择题
Cold water flowing southward through the western part of the Bering Strait between Alaska and Siberia is joined by water circulating counterclockwise in the Bering Sea to form the（）.
A.Alaska Current B.Subarctic Current C.Kuroshio Current D.Oyashio Current
单项选择题 Advection fog is most commonly caused by（）.
单项选择题 Advection fog holds longest over which portions of the lakes?（）
单项选择题 A tide is called diurnal when（）.
