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
单项选择题 Good weather is usually associated with a region of（）.
单项选择题 Generally speaking，with（）the weather becomes cloudy or overcast with strong winds.
单项选择题 For an accurate barometer check，you would（）.
