具有氟释放能力而防龋的粘固剂是
A．磷酸锌粘固剂B．氧化锌-丁香酚粘固剂C．氢氧化钙粘固剂D．玻璃离子粘固剂E．聚羧酸锌粘固剂
参考答案：D
We were sad to know that about 30 kids had been killed in Sandy Hook, Newtown, the USA ____ December 14, 2012.
A．in
B．at
C．on
D．by
将颈深淋巴结分为颈深上及颈深下淋巴结的解剖结构分界为
A．肩胛舌骨肌与颈内静脉交叉处
B．肩胛舌骨肌与颈内动脉交叉处
C．肩胛舌骨肌与颈外静脉交叉处
D．肩胛舌骨肌与颈总动脉交叉处
E．肩胛舌骨肌与颈外动脉交叉处
