I like to play ping-pong ____________ my cousin. [ ]
A. and
B. to
C. with
答案:C
塑化治疗技术中的要求是()
A.尽量拔除牙髓
B.保留根尖1/3处牙髓
C.保留根尖1/2处牙髓
D.可以不拔髓
E.必须拔尽牙髓
房屋产权