单项选择题 If your weather bulletin shows the center of a low pressure area to be 100 miles due east of your position，what winds can you expect in the Northern Hemisphere?（）.

单项选择题 If the sky was clear，with the exception of a few cumulus clouds，it would indicate（）.

单项选择题 If a weather bulletin shows the center of a low pressure system to be 100 miles due east of you，what winds can you expect in the Southern Hemisphere?（）.