—Is your eraser in your pencil-box?

—_______.[ ]

A. Yes, it's

B. No, it isn't

C. It is

D. It's an egg

直接接触商品并随商品进入零售网点和消费者的包装称为（）。

A.中性包装

B.集合包装

C.销售包装

D.运输包装