单项选择题

（）forms over land，most frequently during autumn and winter over low-lying land，especially if it is damp and marshy and in valleys on quiet nights with clear skies.

A.FRONTAL FOG
B.MIXING FOG
C.ADVECTION FOG
D.RADIATION FOG

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单项选择题
（） blow more or less constantly（except when monsoons prevail）throughout all seasons at a mean speed of around 14 knots and are generally strongest in the late winter.

A.Trade Winds
B.Winds of the temperate zones
C.Monsoons
D.Land and Sea Breezes
单项选择题
（）are experienced in temperate latitudes during warn summer weather but rarely exceed Force 3 and may extend 10 to 15 miles on either side of the coastline.

A.Trade Winds
B.Winds of the temperate zones
C.Monsoons
D.Land and Sea Breezes
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