单项选择题

A．About four days.
B．Around eight days.
C．A day and a half.
D．More than six days.
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单项选择题
A．Companies can send ads indirectly to customers over the net.B．Companies can send goods directly to department stores.C．Customers can examine and compare goods in price.D．Customers can get the goods before they pay for them.
A．Companies can send ads indirectly to customers over the net.
B．Companies can send goods directly to department stores.
C．Customers can examine and compare goods in price.
D．Customers can get the goods before they pay for them.
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