【题目】On the third floor there are two rooms，__________ is used as a meeting room.
A. one of them B. the larger of which
C. the larger one of them D. the larger of whom
在线课程【答案】B
【解析】考查定语从句。句意：在3楼上有2个房间，其中大一些的那个被用作会议厅。them不能引导定语从句，排除A项和C项；而whom引导定语从句，只能修饰人。