单项选择题

A．12 years.
B．20 years.
C．30 years.
D．68 years.
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单项选择题
A．Searching the library catalog. B．Studying for an exam. C．Reading the newspaper. D．Exercising in the gym.
A．Searching the library catalog.
B．Studying for an exam.
C．Reading the newspaper.
D．Exercising in the gym.
单项选择题
A．The problems caused by the Revolutionary War. B．How some people became rich in the late 1700s. C．The importance of establishing a tax system in the Constitution. D．Motives for creating the United States Constitution.
A．The problems caused by the Revolutionary War.
B．How some people became rich in the late 1700s.
C．The importance of establishing a tax system in the Constitution.
D．Motives for creating the United States Constitution.
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