问题 选择题 在数-227,0,+2.73,715,π,-2013,0.•3中,正分数有( )个.A.5个B.4个C.3个D.2个 答案 在数-227,0,+2.73,715,π,-2013,0.•3中,正分数有:+2.73,715,0.•3三个.故选:C.