Would you mind closing the door? __________. It is hot outside ,don’t let the cool air out.

A．No, you’d better not

B．No, not at all

C．Yes, never mind

D．Yes, of course not.

发票是一种重要的商业单证，是卖方结汇所需的单据之一，也是买方收货、付款以及报关纳税的依据。