卡体进入基牙倒凹区，可造成
A．义齿弹跳 B．义齿摘戴困难 C．恶心、唾液增多 D．粘膜广泛压痛 E．咬合时基牙酸痛、敏感
参考答案：B
There a meeting tomorrow afternoon.
A. is going to be B. is going to have C. are going to be
洗车前前为什么要对槽车进行放风？
