--When was the People’s Liberation Army’s Navy founded?---It the April of 1949.A. d

问题补充：

----- 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

答案：

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。