单项选择题

The passage is mainly about ______.

A．how American goods are produced
B．how American consumers buy their goods
C．how American economic system works.
D．how American businessmen make their profits.

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单项选择题

The first two sentences in the second paragraph tell us that ______.

A．producers can satisfy the consumers by mechanized production
B．consumers can express their demands through producers
C．producers decide the price of products
D．supply and demand regulate price

单项选择题

The word embrace (Sent. 2, Para. 3) may convey the meaning of ______.

A．hugs
B．includes
C．excludes
D．demands