清洗面案时，案子上的面粉应过罗后倒回面桶。
参考答案：对
( )属致密坚硬的火山流纹岩山体，被称为我国造型地貌博物馆。
A．天子山
B．雁荡山
C．泰山
D．黄山
The teacher and writer _____ the lecture. It'll be finished in half an hour. [ ]
A. have gone to
B. have been to
C. has gone to
D. has been to
