Exercises( Units One- Five) I Vocabulary and structure 1. On my way to school, I saw people advertisements and sample products A conveying B creating C discarding D distributing

2. 直流传输特性曲线 c区：νI 0(小)，A′→B点

1. Who am I? Chris Wallace, Lecturer at the Department of Economics, Oxford University and Fellow in Economics at Trinity College. 2. What do I do? Teach economics and research in the field of game theory. 3. Who are you? First year students taking either the Philosophy, Politics and Economics (PPE) degree

Ⅱ. Listening skills Listening for Telephone numbers 1. W: I' m wondering if the weather will be good for us to go cycling on Saturday M: Let's call the weather office. I know the phone number. It's 661-3047. If the weather is going to be bad, we'll have to wait for another week Q: What's the phone number for the weather office?

在终端窗口中执行命令#vim ztg.txt，如图 2-11 所示，用 Vim 编辑器来编辑 ztg.txt 文件。 刚进入 Vim 之后, 即进入命令模式，此时输入的每一个字符，皆被视为一条命令，有 效的命令会被接受，若是无效的命令，会产生响声，以示警告。如果想输入新的内容，只要 按一个表 2-5 中的字符键（【a/A】键、【i/I】键或【o/O】键）即可切换到输入模式，如图 2-12 所示

9.1 I/O接口技术概述 9.2 并行I/O口的直接应用 9.3 可编程并行通信接口芯片8255A 9.4 LED显示接口技术 9.5 键盘接口 9.6 8279键盘显示器接口芯片

一、选择题: 1若有以下说明和语句,且0