光滑斜面的长度为L,一物体由静止从斜面顶端沿斜面滑下,当该物体滑到底部时的速度为v,则物体下滑到处的速度为[ ]
A.
B.
C.
D.
答案:A
Don't you recognize him? Just look up. On the opposite wall ________.
A.does his photo hang
B.hangs his photo
C.is hanging his photo
D.is his photo hanging
颅底骨折常伴有()
A.张口受限
B.复视
C.耳鼻出血
D.颅面分离
E.咬错乱