若两圆的半径是方程x2-5x+6=0的两个根，且圆心距是5，则这两圆的位置关系是 [ ]
A．内切
B．相交
C．外切
D．外离
答案：C
You would have helped your mother do some housework. But you ____.
A．don’t
B．didn’t
C．wouldn’t
D．weren’t
