仿印邮票图案时，放大或者缩小不足三分之一的，必须在邮票图案的（）加印一条明显的斜线。
参考答案：右下角或左下角
--- I am going to visit the Shanghai EXPO this summer. Will you come with me?
---- Thanks. I’m afraid lots of people are planning for that. I prefer to stay at home rather than___ _ there.
A．go
B．went
C．to go
D．going
连续供给物料并不断取出细粉的粉碎方法属于（）
A．自由粉碎
B．开路粉碎
C．循环粉碎
D．低温粉碎
E．干法粉碎
