單項(xiàng)選擇題High clouds，composed of small white flakes or scaly globular masses，and often banded together to form a mackerel sky，would be classified as（）.
A.cirrus
B.cirrocumulus
C.altostratus
D.cumulonimbus
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1.單項(xiàng)選擇題Good weather is usually associated with a region of（）.
A.low barometric pressure
B.high barometric pressure
C.falling barometric pressure
D.pumping barometric pressure
2.單項(xiàng)選擇題Generally speaking，with（）the weather becomes cloudy or overcast with strong winds.
A.high pressures
B.low pressures
C.weak pressures
D.strong pressures
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Steady precipitation is typical of（）．
題型：?jiǎn)雾?xiàng)選擇題
When a hurricane passes into high latitudes over colder water and the source of heat is disrupted，the storm assumes the characteristics of（）.
題型：?jiǎn)雾?xiàng)選擇題
When experiencing heavy winds，you should reef sails to（）.
題型：?jiǎn)雾?xiàng)選擇題
In regions near the poles，the winds are generally described as（）.
題型：?jiǎn)雾?xiàng)選擇題
Two well-developed high pressure areas may be separated by a（）.
題型：?jiǎn)雾?xiàng)選擇題