A:only finding; which
B:only to find; that
C:to find; whom
D:found; that
关于力的概念,下列说法中正确的是( )
如图,在平面直角坐标系xOy中,矩形OEFG的顶点E的坐标为(4,0),顶点G的坐标为(0,2),将矩形OEFG绕点O逆时针旋转,使点F落在y轴的点N处,得到矩形OMNP,OM与GF交于点A.