虽然时代不同了，我想历史古迹总该是依旧吧。
A.Now that times are different, I think the historic sites must have remained the same. B.Only if times are different, I think the historic sites should have remained the same. C.Even though times are different, the historic sites, I presume, must have remained the same. D.Since times are different, but the historic sites, I presume, should have remained the same.正确答案C
