地面抛光剂有油性和水性两种，（）适用于木质和多孔质地面。
参考答案：油性抛光剂
肩关节功能位为（）
A.屈曲20°
B.屈曲90°
C.背伸20°
D.旋前、旋后的中立位
E.外展50°，前屈20°，内旋25°
—Have you told Joan the bad news that her grandfather fell off the bike and hurt seriously?
—Yes. I told her ________I saw her this afternoon.[ ]
A. while
B. the moment
C. until
D. suddenly
