单选题Compared to a low pressure system，generally the air in a high is（）.Awarmer，less dense，and less stableBcool，more dense，and drierCmuggy and cloudyDextremely moist with high relative humidity
单选题
Compared to a low pressure system，generally the air in a high is（）.
A
warmer，less dense，and less stable
B
cool，more dense，and drier
C
muggy and cloudy
D
extremely moist with high relative humidity
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