单项选择题

In the doldrums you will NOT have（）.

A.high relative humidity
B.frequent showers and thunderstorms
C.steep pressure gradients
D.frequent calms

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单项选择题

A.steady，constant winds
B.frequent rain showers and thunderstorms
C.steep pressure gradients
D.low relative humidity

单项选择题

A.high winds
B.high overcast clouds
C.calm or light winds
D.fog or steady rain

单项选择题

A.north to south
B.south to north
C.east to west
D.west to east