— Excuse me, could you tell me ______?

— Certainly. Go straight ahead and you'll see it oti your left. [ ]

A. where the post office is

B. when you will visit the museum

C. where is the post office

D. when will you visit the museum

关于上颌中切牙下列哪些是正确的

A．唇侧牙槽骨壁薄

B．单根弯向远中，断面呈三角形

C．先使用近远中向摇动力

D．应用旋转力效果好

E．最后沿牙根纵轴方向牵引脱位