單項(xiàng)選擇題

What will a veering wind do（）.

A.Change direction in a clockwise manner in the Northern Hemisphere
B.Circulate about a low pressure center in a counterclockwise manner in the Northern Hemisphere
C.Vary in strength constantly and unpredictably
D.Circulate about a high pressure center in a clockwise manner in the Southern Hemisphere

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單項(xiàng)選擇題

What benefit is a weather bulletin to a mariner（）.

A.It provides a legal reason to cancel a projected voyage
B.It allows the mariner to make long term weather forecasts
C.It is of little benefit since the weather changes frequently and rapidly
D.It gives the mariner time to prepare for weather changes

單項(xiàng)選擇題

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

A.windy showers
B.showers with winds
C.wintry showers
D.showery winds