()her and then try to copy what she does.
A.Watch
B.See
C.Mind
D.Stare at
参考答案:A
男,40岁,缺失,为防止义齿游离端下沉对基牙5产生扭力,5上安放()
A.回力卡环
B.联合卡环
C.杆形卡环
D.对半卡环
E.RPI卡环