如图, ∠AOB是一个任意角,小聪在边OA、OB上分别取OM=ON,移动角尺,使角尺两边相同的刻度分别与M,N重合,他说过角尺顶点C的射线OC便是∠AOB的平分线,请你判断小聪的说法正确吗?并说明理由 答案:考点:全等三角形的判定全等三角形的性质 试题解析:由题意可得:OM=ON,MC=NC 又∵OC=OC ∴△OMC≌△ONC(SSS) ∴∠MOC=∠NOC ∴OC是∠AOB的角平分线 So absorbed _______ in her work that she didn’t
realize it was time that she picked up her daughter.
A.she was B.was she C.did she D.she did