题目

— I'm sorry, my mind _________. What _________ you _________?— You are always absent- minded in class. A . am wandering; do; say B . wandered; had; said C . wandered; did; say D . was wandering; did; say 答案：D明朝的海禁政策和清朝的闭关锁国政策的相同之处是（　）A．禁止中外一切贸易活动              B．禁止民间与各国进行贸易C．都为防止倭寇的侵扰                D．都长期实行