tablecutadj.宝石顶面切平的tablen.桌子；台子；餐桌；一桌人；表格；目录；（竞赛的）排名榜vt.搁置；将 ... 放于桌上；提交讨论；列入表中adj.桌子的table of economic indicators经济指标表table tennis specialty class乒乓球专项课table of standard performance性能表table of measures and weights度量恒表table model profile projector台式轮廊投影仪table tennis training machine乒乓球训练机Tables and stools for technic技术用桌子和凳子table tennis and badminton.打乒乓球和羽毛球。table listed up daily changes台上提每天的变化table of exponential function指数函数表

1. How do you use the tool to select an item from a listbox, when it doesn't know the listbox is there?
   而当工具并不知道列表框是否在那里时，又如何让它选择其中的表项呢？