单项选择题
A.reaching B.extending C.increasing D.upgrading
High clouds，composed of small white flakes or scaly glo...
单项选择题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
Good weather is usually associated with a region of（）.A...
单项选择题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
Generally speaking，with（）the weather becomes cloudy or ...
单项选择题Generally speaking，with（）the weather becomes cloudy or overcast with strong winds.
A.high pressures B.low pressures C.weak pressures D.strong pressures
