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單項選擇題

In the doldrums you can expect（）.

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

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單項選擇題

In reading a weather map，closely spaced pressure gradient lines would indicate（）.

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

單項選擇題

In North America the majority of the weather systems move from（）.

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

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