— Is your sister's hair long now?
— Yes, ____. ( )
在平面直角坐标系xOy中,过点(0,2)且平行于x轴的直线,与直线y=x﹣1交于点A,点A关于直线x=1的对称点为B,抛物线C1:y=x2+bx+c经过点A,B.