I got out of the taxi, ___ the fare and dasked into the station.

A．paying

B．paid

C．to pay

D．having paid

牙体预备时，为减小对牙髓的损害所采取的措施是（）

A.水雾冷却

B.间歇切割

C.短时切割

D.轻压磨切

E.以上都对