I received a letter ________ America, in which Tom introduced me the old town ________ the ancient times .
A.dated from; dated from
B.dating back to; dating back to
C.dating from; dated back to
D.dated from; dating back to
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D解析导解：a letter与date之间应为动宾关系，所以应用过去分词短语做后置定语；而第二个空前的the old town或date之间为主谓关系，应用现在分词做后置定语，故选D．