单选题 Although it was his first experience as chairman, he ______ over the meeting with great skill.
[A] presided [B] administered [C] mastered [D] executed

【正确答案】 A
【答案解析】preside (at/over)主持(会议、业务)；administer管理；执行；master掌握，精通；execute执行；处决。句意：尽管这是他第一次当主席，但他还是娴熟地主持了这次会议。