磷酸锌黏固剂的优点是
A．不溶于水
B．对牙髓刺激小
C．是热的不良导体
D．粘接力强
E．对牙髓有安抚作用
参考答案：C,D
It is easy for people to ______ the bad habits such as smoking and drinking, which are not so easy
to get rid of. [ ]
A. look into
B. slide into
C. break into
D. knock into
依据什么原则确定不同房态客房的清扫顺序？
