Mother always tells me not to _____ anyone, even if he is not well educated.

A．look out for

B．look down upon

C．look back on

D．look forward to

国外的老客户向你要求寄送一般丝绸面料样品，量不多但要求快速，你会怎样寄送样品和处理样品寄送的费用( )

A．邮政的航空大包，寄费到付

B．邮政的航空大包，寄费预付

C．航空快递，寄费预付

D．航空快递，寄费到付