单项选择题

This passage is mainly about _______.

A．how average Americans view their economic system
B．the role of the government in the American economy
C．how supply and demand determine prices in the American economy
D．the roles of the public and private sectors in the American economy

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单项选择题

In Line 1, Para. 4, the expression economic forces are unfettered means _______.

A．prices are determined by consumers
B．supply and demand are allowed to operate freely
C．economic regulations are not enforced
D．the economy is growing

单项选择题

The word it (in Line 10,Para. 2) refers to _______.

A．a scene we saw on television
B．a symbolic object or action in dreams
C．an incident or fact we have forgotten
D．a book or a newspaper report we read last week