单项选择题

Which of the following would be the best title for the passage

A．Monopolies
B．The Commodity Market
C．The Competition Continuum
D．The Best Type of Competition
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单项选择题
An example of product in monopolistic competition is ______.
A．com
B．electricity
C．airline ticket
D．coffee
单项选择题
The writer believes that before long ______.
A．men and women will compete for secretarial work
B．men will take over women' s jobs as secretaries
C．women will operate most office machines
D．men will be better with machines
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