A:comes u
B:come acro
C:comes along
D:comes to
用手将一重为5N的物体全部压入水中(手不曾碰水),物体排开的水重8N,此时物体受到的浮力为____ N,放手后物体将____ (选填”“上浮”、“下沉”或“悬浮”),待物体静止时所受浮力为____ N.