在参与肩关节的活动中，不包括（）
A.盂肱关节
B.肩胛骨
C.肩锁关节
D.胸骨
E.胸锁关节
参考答案：D
I’m not a little tired today after giving the room a thorough cleaning and I have never had_________today.
A．as tiring a day as
B．as a tiring day
C．tiring as a day as
D．day as tiring as
下列关于隙卡沟的预备，错误的是（）
A.尽量利用天然间隙
B.必要时可调磨对牙尖
C.沟底呈楔形
D.深度不应破坏邻接点
E.宽度一般为0.9～1.0mm
牙尖