飞蚊症是指()
A.眼前确有蚊虫飞动
B.眼前固定的黑影
C.眼前飘动的黑影
D.玻璃体液化
E.玻璃体后脱离
参考答案:C
When the man came in, gun in hand, we all stood there, ______. [ ]
A. frightened
B. frightening
C. being frightened
D. having frightened
肘关节后脱位复位后固定的位置是()。
A.屈肘130°
B.屈肘120°
C.屈肘110°
D.屈肘100°
E.屈肘90°