— Several department stores, including the one we usually go to, ____ sidewalk sales this week

— Let's go and have a look.[ ]

A. is having

B. are having

C. has

D. have had

销售包装的作用不包括( )

A．便于陈列

B．便于使用

C．有利于增加销量

D．保护货物以免受损坏