Ladies and gentlemen: I have come to a decision which I felt I should tell you and all of my fellow American citizens, as soon as I was certain in my own mind and in my own conscience that it is the right thing to do. I have learned already in this* office that the difficult decisions always come to this desk. I must admit that many of them do not look at all the same as the hypothetical questions that I have answered f reely and perhaps too f ast on previous occasions

This is the 37th time I have spoken to you f rom this office, where so many decisions have been made that shape the history of this nation. Each time I have done so to discuss with you some matter that I believe affected the national interest. In all the decisions I have made in my public life I have always tried to do what was best for the nation

一、计算机产生与发展 二、微型计算机系统组成 三、数字化信息编码与数据表示 四、多媒体技术应用基础 五、计算机数据安全

6.1计算机网络基础 6.2 Internet基础 6.3 Internet的接入方式 6.4IE浏览器 6.5电子邮件

4.1 认识 Excel2003系统 4.2 工作表中数据的输入与编辑 4.3 工作表的编辑和格式化 4.4 创建图表 4.5 Excel 2003 的数据处理 4.6 建立和编辑数据透视表 4.7 页面设置和打印

1.4.1 中文Windows XP的控制面板的基本操作 1.4.2 安装和删除程序 1.4.3 添加新硬件

清华大学同名教材：精通office2007_第23章 使用Outlook 2007收发电子邮件

清华大学同名教材：精通office2007_第20章 创建数据库对象

清华大学同名教材：精通office2007_第17章 放映与输出演示文稿

清华大学同名教材：精通office2007_第15章 使用对象丰富幻灯片内容