----Matthew said that he was very _______. How about Jack?

----He was satisfied with Matthew’s _______, and wanted the unpleasant business over.

A．frightened; suggestion

B．sorry; offer

C．sorry; apology

D．pleased; request

关于翻瓣去骨拔除断根，错误的方法是

A．瓣应足够大，使视野清楚

B．瓣的基底部位应宽，以提供充足的血运

C．翻瓣时应将骨膜保留在骨面以防术后骨感染

D．保证足够去骨间隙，防止去骨损伤软组织

E．缝合后应保证切口下方有骨支持