11．Which of the following words applying to any date or period in the credit referring to shipment will be understood to exclude the date mentioned?( )
A．to
B．till
C．after
D．from
12．Finding and managing the desired( )mix across the supply chain is a primary responsibility of logistics．
A．transportation
B．service
C．cost
D．value
13．Successful e—businesses are those that recognize the needs of their target audiences andmatch those needs with relevant( )．
A．background
B．foreground
C．content
D．context
14．Money may cease to exist，replaced by more convenient technologies such as smart cardsand( )．
A．digital cash
B．digital signature
C．digital certificate
D．digital video
15．Because of the complications of air freight，a large proportion of air freight shipmentsare handled by( )．
A．freight forwarding agency
B．airport
C．shipper
D．consignee

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