3.
In American economy, the basic role of the federal government is ______.
A、
to levy taxes on any business
B、
to issue money for economy
C、
to set up banking and control money supply
D、
to improve markets and protect each economic element from abuse
【正确答案】
D
【答案解析】
联邦政府的基本作用是改善市场和保护每一种经济元素。
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