单项选择题

A．Do business in stores.
B．Do business over networked computers.
C．Buyers and sellers come together to exchange goods for money.
D．Do business through mall order catalogs and telephone operators.
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单项选择题
A．The mail was sent back to the post office.B．He doesn’t have anything to drop in the mailbox.C．It’s too soon to go hack there.D．The post office is closed for an hour.
A．The mail was sent back to the post office.
B．He doesn’t have anything to drop in the mailbox.
C．It’s too soon to go hack there.
D．The post office is closed for an hour.
单项选择题
A．She doesn’t like the professor very much.B．She doubts class will be canceled.C．She doesn’t want to attend the conference.D．She wonders whether the professor is an accountant.
A．She doesn’t like the professor very much.
B．She doubts class will be canceled.
C．She doesn’t want to attend the conference.
D．She wonders whether the professor is an accountant.
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