单项选择题
A.Green diamond B.Green triangle C.Red diamond D.Red square
As the temperature of the air reaches the dew point，（）....
单项选择题As the temperature of the air reaches the dew point，（）.
A.rain must develop B.fog may form C.it begins to snow D.water freezes
As the temperature of an air mass decreases，the（）.A.abs...
单项选择题As the temperature of an air mass decreases，the（）.
A.absolute humidity decreases B.relative humidity increases C.specific humidity decreases D.dew point rises
As the South Equatorial Current approaches the east coa...
单项选择题As the South Equatorial Current approaches the east coast of Africa，it divides with the main part flowing south to form the warm（）.
A.Agulhas Current B.Canary Current C.Benguela Current D.Madagascar Current
