【判断题】一个 8 × 8 棋盘,减去对角的两个格子后依然存在完美覆盖.( )
【简答题】I wouldn’t have worked so hard,if I had known how easy the examination would be.可改写为:I wouldn’t have worked so hard,_________.
【简答题】I had always _______upon the children that if they worked hard they would succeed in life.
【单选题】在当前的Word文档中要插入屏幕截图,可以通过下面哪个快捷方式可以快速取得当前屏幕截图拷贝到剪切板中