A warm front is one where _______ .
A.warm air is replaced by colder air
B.warm air is moving to replace cold air
C.the temperature is relatively high
D.the temperature and pressure are both very high
正确答案是B
A warm front is one where _______ .
A.warm air is replaced by colder air
B.warm air is moving to replace cold air
C.the temperature is relatively high
D.the temperature and pressure are both very high
正确答案是B