单项选择题
Hurricane warnings are issued（）when winds of force 12 or above are expected.
A.in all parts of the world B.in some parts of the world C.from all corners of the world D.from every corner of the world
单项选择题 High pressure ridge（）from Sevastopol to eastern Libya.
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（）.
单项选择题 Good weather is usually associated with a region of（）.
