题目

He was very rude to the Customs officer, _____ of course made things even worse.                                 A. who           B. whom     C. that                   D. which 答案：D在京剧的形成和发展中起重要作用的有     ①北京成为四方艺人的聚集中心   ②北京观众的口味和演出市场的需要③清朝皇室贵族、官员的欣赏爱好 ④闭关政策使民族戏曲剧种得到发展A．①②③B．①②④C．①③④D．②③④