High pressure ridge（）from Sevastopol to eastern Libya.

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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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

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