修复治疗一般在牙周基础治疗完成后()
A.6~8周进行
B.5~7周进行
C.4~6周进行
D.2~4周进行
E.1~2周进行
参考答案:A
The happy _____ of children playing in the garden disappears, and it is quiet again. [ ]
A. scene
B. scenery
C. scare
D. spot
简述银行汇票未用退回如何处理?