单项选择题
A cold front moving in from the northwest can produce（）.
A.thunderstorms，hail，and then rapid clearing B.increasing cloud cover lasting for several days C.lengthy wet weather D.low ceilings with thick cirrus clouds
单项选择题 （）rain means it rains in some parts of the area.
单项选择题 （）moving rather quickly east expected 150 miles south of Cape Farewell 972 by 160000 GMT.
单项选择题 （）LOW ELY SLWLY WITH COLD FRONT FM CEN TO 12N 179W AND WARM FROM FM CEN TO 11N 171W.
