患者男性，67岁，上下颌牙列缺失，行全口义齿修复，义齿戴用两周后复诊，自述义齿容易松动脱落

如果患者大张口或者打哈欠时义齿容易松动，可能的原因是（）

A.人工牙排列不整齐

B.义齿咬合不平衡

C.义齿边缘过度伸展

D.正中关系恢复不正确

E.基托表面不光滑

To make your own study plan is a good way to become a top student. After your plan  ______,

you should correct it from time to time, and then it will be more helpful.[ ]

A. comes out              

B. watches out            

C. finds out