— Is Mike at home?

— No. He ________ with his friends now.

A．swims

B．is swimming

C．swam

D．will swim

对知名商品特有的名称、包装、装潢的认定，由（）级以上工商机关予以认定。

A、国家工商总局

B、省

C、地、市

D、县