单项选择题
A.falls／in B.has been falling／on C.has fallen／at D.is falling／in
The term flood current refers to that time when the wat...
单项选择题The term flood current refers to that time when the water（）.
A.is flowing towards the land B.is moving towards the ocean C.level is not changing D.level is rising because of heavy rains
The steady current circling the globe at about 60°S is ...
单项选择题The steady current circling the globe at about 60°S is the（）.
A.Prevailing Westerly B.Sub-Polar Flow C.West Wind Drift D.Humboldt Current
The speed of an ocean current is dependent on（）.A.the d...
单项选择题The speed of an ocean current is dependent on（）.
A.the density of the water B.the air temperature C.the presence of a high pressure area near it D.underwater soil conditions
