第13题: [单项选择]We were discussing the housing problem when a middle-aged man cut in and said, "There's no point in talking about impossibilities." A. intersect B. interject C. penetrate D. adulterate 参考答案:B 答案解析:句意:我们正在讨论住房问题,这时一个中年男子插话了:“讨论不可能的事情是毫无意义的”。interject插嘴;intersect相交,交叉;penetrate穿透,渗透,洞察;adulterate掺杂