【简答题】A.The dean showed him the picture the player drew. B.The dean showed him two students' papers. C.The dean showed him two student's knife. D.The dean showed him the money stolen by the students.
【单选题】Our investigation ______ the inefficiency of your management.
【单选题】It was getting late when she finally _____.
【简答题】网络攻击的步骤 隐藏 I P、 信息收集 、 ________________、________________、 在网络中隐身。