A survey________public last month shows that Japan moves behind other nations in teaching youngsters right from wrong.

A．was made　

B．was making

C．made　

D．being made

制作FR-Ⅲ矫治器工作模型时，上颌的前庭沟应（）

A.按牙槽的解剖形态向深方延伸3mm

B.按牙槽的解剖形态保持不变

C.按牙槽的解剖形态适当缓冲

D.按牙槽的解剖形态向深方延伸7mm

E.唇颊系带处要修正