單項選擇題

Cyclones tend to move（）.

A.perpendicular to the isobars in their warm sectors
B.parallel to the isobars in their warm sectors
C.parallel to the line of the cold front
D.perpendicular to the line of the cold front

你可能感興趣的試題

單項選擇題

Cumulonimbus clouds can produce（）.

A.dense fog and high humidity
B.gusty winds，thunder，rain or hail，and lightning
C.clear skies with the approach of a cold front
D.a rapid drop in barometric pressure followed by darkness

單項選擇題

Cumulonimbus clouds are most likely to accompany a(n)（）.

A.high pressure system
B.cold front
C.warm front
D.occluded front