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?（）.

单项选择题 HIGH WAVES；DENSE STREAKS OF FOAM ALONG THE DIRECTION OF THE WIND；CRESTS OF WAVES BEGIN TO TOPPLE，TUMBLE AND ROLL OVER；SPRAY MAY AFFECT VISIBILITY.This condition is likely to be termed（）.

单项选择题 Gale warnings are usually issued when winds of（）8-9 are expected．