解方程：4x-1x-3=2+1x-3．

With the world changing fast, we have something new _____ with all by ourselves every day.

A．deal

B．dealt

C．to deal

D．dealing

某小区用“156102”表示15栋6单元1层2室．聪聪家住在该小区的30栋8单元4层1室，他家的门牌号是______．

It's a good idea to get students to retell a story _____ their own words. [ ]

A. of

B. in

C. by

D. through

下列指数中常用来描述牙周状况的是

A．DMFT
B．dmfs
C．CPI
D．Dean指数
E．DNFS

石棉状糠疹最明显的特征是（）

A.毛发鞘

B.糠状鳞屑

C.毛囊口棘状隆起

D.灰白色细小鳞屑

E.油腻性鳞屑