—Putting on a happy face not only helps us make friends but also makes us feel better.

—__________.

A．I’d love to

B．I’m with you on that

C．It’s up to you

D．It’s my pleasure

每批原料、辅料、代表性产品，经正式抽样都应予以留样，留样量至少为所有检查项目需要量的三倍。留样时间应为药品的有效期到期后再保存一年。