— Now that you like the computer so much, why not buy one?

— Well, I can’t afford ______ computer at present.

A．that expensive a

B．a such cheap

C．a so cheap

D．that an expensive

经过一系列清点、核对、检查等程序，配送员将客户或门店拒收货品和相关单据带回配送中心的过程称为( )

A．签收作业
B．收退作业
C．核单作业
D．配送作业