单项选择题

A．$60.
B．$48.
C．$32.
D．$16.
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单项选择题
Many firms give away small quantities of their products as ______ so that people can try them before buying.
A．examples
B．models
C．samples
D．exhibits
单项选择题
In Britain today women ______ 44% of the work force, and nearly half of the mothers with children are in paid work
A．build up
B．make up
C．stand for
D．conform to
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