Question

Every day a number of tourists take pictures in front of the tower, which dates ________ as early as 800 years ago.

Answer 1

from　

句意：每天都有许多游客在这座可追溯到800年前的塔前拍照。短语date back to相当于date from，意为“追溯到；始于”。两者通常与过去的时间状语连用，但多用于一般现在时。