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單項(xiàng)選擇題

A weather map is a synoptic data because it（）.

A.summarizes a great deal of information
B.can be interpreted accurately
C.appears daily
D.is prepared by the Weather Bureau

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單項(xiàng)選擇題

A weather forecast states that the wind will commence backing. In the Northern Hemisphere，this would indicate that it will（）.

A.shift in a clockwise manner
B.shift in a counterclockwise manner
C.continue blowing from the same direction
D.decrease in velocity

單項(xiàng)選擇題

A tropical wave is usually preceded by（）.

A.tropical storms
B.good weather
C.heavy rain and cloudiness
D.heavy seas