单项选择题
（）moving rather quickly east expected 150 miles south of Cape Farewell 972 by 160000 GMT.
A.Developed low B.Developing low C.Being developed low D.Low to be developed
单项选择题 （）LOW ELY SLWLY WITH COLD FRONT FM CEN TO 12N 179W AND WARM FROM FM CEN TO 11N 171W.
单项选择题 The Routing System which aimed at reducing the risk of casualties is called as（）.
单项选择题 When winds of force reach 10-11 in Beaufort Scale，usually we call such winds as（）.
