A．In the early to mid 18th century.
B．In the early to mid 19th century.
C．In the early 19th century.
D．In the early 18th century.
参考答案B
解析:
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A．The art of lobbying politicians has a rather long history in U.S.
B．Americans have the rights to petition the government.
C．Jack Abramoff was charged with corruption.
D．The line between lobbying and bribery is vague.
