固定桥粘固后很快出现咬合时疼痛，首先要检查的是()
A．牙髓情况
B．有无咬合高点
C．牙槽骨是否破坏
D．有无粘固剂未去尽
E．触点情况
参考答案：B
词形转换。
1. E-mail English is like writing r .
2. Jim learns English all by (he).
3. We did two (experiment) in chemistry class.
4. Are you parents (pleasant) with your study?
5. I (normal) travel by public transport.
6. Do you know (who) bike it might be?
叉车的型号为“B30S”。（）
