相关Beforewindowswereuse的文学知识

问题详情：阅读理解。Beforewindowswereused,oldhousesinNorthernEuropeandBritainwereverydark.Theirgreatroomswerehigh,withonlyaholeintheroof(屋顶)toletoutthesmokeformcookingfires.Astimewentonpeoplebegantoma...