____ , people in the north have noodles as their main food while thesoutherners are fond of rice in China.    [ ]

A. In common  

B. In general  

C. In total  

D. In return

头颈部肿瘤放疗前应做的常规准备中哪项可以除外

A．治疗可以保留的龋齿、牙周炎及患牙
B．去除口内金属义齿
C．放疗前2周拔除无法治愈的牙
D．牙周洁治
E．修复口内缺失牙