----- When was the People’s Liberation Army’s Navy founded?
-----It the April of 1949.
A. dates to
B. dated back
C. dated from
D. dates back to
网友回答
A. dates to
B. dated back
C. dated from
(答案→)D. dates back to
解析：D 考查动词短语辨析时态用法。date back to=date from追溯到。