青少年根尖周病最好选用哪种治疗方法
A．干髓术
B．根管充填术
C．牙髓塑化疗法
D．安抚疗法
E．空管疗法
参考答案：B
用所给词的正确形式填空。
1. The students ____ (talk) to each other in the classroom now.
2. How ____ (do) Liu Ming and Liu Ping spend their weekends?
3. I'd like ____ (catch) some ____ (dragonfly) in the park.
4. School ____ (be) over. I can go home now.
5. Ben usually ____ (go). ____ (climb) on Saturdays.
功能残气量
