We may infer from the second paragraph that
A．DNA technology has been widely applied to history research.
B．in its early days the U.S. was confronted with delicate situations.
C．historians deliberately made up some stories of Jefferson’s life.
D．political compromises are easily found throughout the U.S. history.
正确答案：D
根据排除法A项中的widely是错误的排除;B项中说的太笼统而第二段在讲关于slaveryC项中deliberately和madeup是不对的因此选D
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