Wemayinferfromthesecondparagraphthat
A．DNAtechnologyhasbeenwidelyappliedtohistoryresearch.
B．initsearlydaystheU.S.wasconfrontedwithdelicatesituations.
C．historiansdeliberatelymadeupsomestoriesofJefferson'slife.
D．politicalcompromisesareeasilyfoundthroughouttheU.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slavery.C项中deliberately和madeup是不对的。因此选D。
