题目

 The woman           there,         in a blue shirt, is Lily’s teacher.     A. seated ; dressing        B. seating ; dressed        C. sat ; dressed        D. sitting ; dressed 答案：D在中，已知a=6,b=8,A=30°,求角B则（ ）.A．有两个解B．有一个解C．无解D．有无数个解