—I don't know the _______. Maybe you can ask his good friend Simon.
A:opinion
B:problem
C:reason
右图是某白化病家庭的遗传系谱,请推测Ⅱ-2与Ⅱ-3夫妇生白化病孩子的几率是( )
如图,抛物线y=ax2+bx+1与直线y=﹣ax+c相交于坐标轴上点A(﹣3,0),C(0,1)两点.