单项选择题
The cold ocean current which meets the warm Gulf Stream between latitudes 40°and 43°N to form the cold wall is called the（）.
A.North Cape Current B.Labrador Current C.Greenland Current D.North Atlantic Current
单项选择题 The apparent wind’s speed can be zero only when two conditions are present. One condition is that the true wind（）.
单项选择题 The apparent wind can be zero when the true wind is from（）.
单项选择题 Steam fog is most likely to occur on the Mississippi and Ohio Rivers in（）.
