通常根尖距上颌窦下壁最近的牙是（）
A.上颌侧切牙
B.上颌尖牙
C.上颌第一前磨牙
D.上颌第二前磨牙
E.上颌第一磨牙
参考答案：E
He was surprised to know that his neighbor had _____ him of playing the piano too loudly at night. [ ]
A. reminded
B. accused
C. charged
D. realized
下列对酸轧活套叙述正确的是（）
A.入口活套有4层
B.出口活套有2层
C.联机活套有3层
D.出口活套位于入口活套和联机活套的中间
