单项选择题

What’s the main topic of the course

A．College credit.
B．Free theater tickets.
C．A certificate of completion.
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单项选择题
A．The lack of a qualified sales force.B．A decline in the number of customers.C．Difficulty in transporting merchandis
A．The lack of a qualified sales force.
B．A decline in the number of customers.
C．Difficulty in transporting merchandis
单项选择题
A．Nine days.B．Two weeks.C．One mont
A．Nine days.
B．Two weeks.
C．One mont
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