题目

— How wide is the table? — It is __________. A. three feet and one half foot      B. three and half feet C. three and one half feet            D. three and one half foot   答案：C（2002•兰州）如图在△ABC中∠A=70°，⊙O截△ABC的三条边所得的弦长相等，则∠BOC=（ ）A．140°B．135°C．130°D．125°