【题目】We have celebrated this festival for many years and it ________ Tang Dynasty.
A. is dated back to B. is dating back to
C. dates back to D. dated back to
在线课程【答案】C
【解析】
试题分析：考查短语。句意：我们过了许多年这个节日了，这个节日可追溯到唐代。And连接两个分句，后面一句话也是完整的句子，date back to追溯到...，故选C项。