主要影响全口义齿咀嚼功能的区为
A．后堤区
B．副承托区
C．边缘封闭区
D．缓冲区
E．主承托区
参考答案：E
65.Is＿necessary to tell his father everything?
A．it
B．that
C．what
D．He
基本汇率
