单项选择题

A．The rise of costs.
B．The drop of sales.
C．The decrease of production.
D． The increase of pollution.
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单项选择题
A．To attend a conference.B．To work in a firm.C．To do some sightseeing.D． To visit an exhibition.
A．To attend a conference.
B．To work in a firm.
C．To do some sightseeing.
D． To visit an exhibition.
单项选择题
A．All staff.B．Young workers.C．New employees.D．Department mananger.
A．All staff.
B．Young workers.
C．New employees.
D．Department mananger.
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