She spent a happy afternoon      her coins and stamps she had collected those years.[ ]

A. to look for   

B. worked on  

C. sorting out  

D. watch over  

上颌窦上壁外伤性骨折，一般不出现（）。

A.脑脊液鼻漏

B.眼球移位

C.鼻出血

D.复视

E.上颌窦积血