请教大家一个问题,我买了一个新房,马上就要 pre-occupancy walk through了,但发现墙和BASEMENT的水泥地有一些裂缝, BUILDER解释 "it looks like building is settled and generally it happens during first year, but I will take no risk and check all walls and telepost in the basement to make sure everything is o.k." 请问,这个回答可靠吗? 问题严重吗? 我可以做一些什么吗? 非常感谢