传统的涂饰工艺被（）新工艺所取代.
A.新技术
B.喷花
C.新材料
D.机械
参考答案：A
It’s a difficult skill to master, but ______, it will benefit you for the rest of your life.
A．once obtained
B．when to obtain
C．after obtaining
D．while obtaining
干眼症患者的渗透压是
A．大于305m Osm/LB．等于300m Osm/LC．小于300m Osm/LD．等于312m Osm/LE．大于312m Osm/L
