关于牙体预备中牙髓保护的描述错误的是
A.尽量少顶备
B.轻压、间断磨切
C.牙体预备分次完成
D.使用切割效率高的车针
E.水雾冷却
参考答案:C
According to the local newspaper, _____ electric shock happening in the kindergarten came as _____ big shock to the public.
A.不填;the
B.the;a
C.不填;a
D.the;the
“近取诸身,远取诸物”是老祖宗最初的造字方式;“画成其物,随体诘诎”是书法最初啊的表现形式。