The area of strong westerly winds occurring between 40°S and 60°S latitude is called the（）.

Mechanical lifting of air by the upslope slant of the terrain is called（）.

In Beaufort Scale，the wind force 7 with speed of 28-33 knots is defined as（）.

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（）.

It is predicted that heavy rains are（）to flood the harbor and its vicinity in a few days.

Of the following，（）is not a wind.

Which of the following statements concerning frontal movements is TRUE（）.

Of the following，（）is not a wind．

Weather conditions in the middle latitudes generally move（）．

West backing south-west gale 8 locally storm 10（）then rain or sleet mainly good.