已知直线y=k（x-m）与抛物线y²=2px（p＞0）交于A，B两点，且OA⊥OB，又OD⊥AB于D，若动点D的坐标满足方程x²+y²-4x=0，则m=______．

On the opposite wall ______ one map ______ dozens of pictures.

A．hang;including

B．are hung;together with

C．is hanged;with

D．is hanging;as well as