单项选择题
MIST is caused by（）.
A.forest fires B.smoke from industrial areas C.dust or sand storms D.water droplets with the relative humidity more than 95%
单项选择题 In the Southern Hemisphere winds in a low pressure system rotate in a（）.
单项选择题 In the relatively calm area near the hurricane center，the seas are（）.
单项选择题 In the Northern Hemisphere，when the wind at your location is northerly，the low pressure center causing the wind is located to your（）.
