A．It can provide a huge market for only customers.
B．It can serve as a powerful commercial medium.
C．It can connect millions of manufacturers.
D．It brings convenience to goods shipment.

A．He would replace a machine.B．He would try to perfect his trade.C．He would have to abolish his skills.D．He would learn to supervise a machine.

A.He
B.
B．He
C.
C．He
D.
D．He
E.

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A．To take a long walk.B．To go for a drive.C．To breathe deeply.D．To meditate.

A.To
B.
B．To
C.
C．To
D.
D．To
E.

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