下颌义点基托需要缓冲的部位是()
A.磨牙后垫
B.下颌舌骨嵴
C.颊系带
D.颊侧翼缘区
参考答案:B
it is to have a cold drink on such a hot day!
A.What a fun
B.How fun
C.What fun
D.How a fun