单项选择题

The passage tells us ______.

A．the relationship between supply and demand
B．the possible results of government controls
C．the necessity of government control
D．the urgency of getting rid of government controls

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单项选择题

Which of the following statements is NOT true

A．The results of economic decisions can not always be predicted.
B．Minimum wage can not always protect employees.
C．Economic theory can predict the results of economic decisions if other factors are not changing.
D．Economic decisions should not be based on economic theory.

单项选择题

The new type of advertisement which is appearing in newspaper columns ______.

A．informs job hunters of the opportunities available
B．promises to offer useful advice to those looking for employment
C．divides available jobs into various types
D．informs employers of the people available for work