—I failed in the exam.

—I am sorry to hear that. Failure is the mother of ________. Try your best, you will ________.

A. success, succeed

B. succeed, success

C. success, successful

患者，男性，75岁，牙列缺失时间长，习惯下颌前伸，左下牙槽嵴骨吸收较右侧明显，1周前全口义齿修复。

正中正常，前伸前牙早接触，应调整（）

A．切牙切缘舌斜面

B．切牙切缘唇斜面

C．切牙舌窝

D．切牙切缘

E．下切牙舌斜面