对话原文
Unit 68 Buying a computer(3)
第68课 买电脑(3)
The customer is choosing a computer with the assistance of the salesperson
顾客在售货员的协助下正在选择电脑。
S: This is a good basic computer package. It's got a good CPU, 256 megabytes of RAM, and a DVD player.
售货员：这是一套很好的电脑基本配备。它有很好的中央处理器，256兆位的随机存取内存，还有一个DVD光驱。
C: Does it come with a modem?
顾客：附有调制解调器吗？
S: Yes, it has a built-in modem. You just plug a phone line into the back of the computer.
售货员：有，它有内置的调制解调器。你只要把电话线插到计算机后面就好了。
C: How about the monitor?
顾客：那显示器呢？
S: A 15-inch monitor is included in the deal. If you want, you can switch it for a 17-inch monitor, for a little more money.
售货员：包含15英寸的显示器。如果您愿意的话，可以换成17英寸的，不过要多一点钱。
C: That's okay. A 15-inch is good enough. All right, I'll take it.
顾客：那无所谓，15英寸的就够用了。好吧，我就要这个。

重点词汇
1．assistance n．协助，帮助
with the assistance of... 在……的协助下
2．CPU 中央处理器
= Central Processing nit
3．megabyte n．兆位
4. RAM 随机存取内存
= Random Access Memory
5．come with... 附有……
例：Does the dinner come with both wine and soft drinks?
（晚餐附有酒和饮料吗？）
6．modem n．调制解调器
7．built-in a．嵌入的；内置的
8．plug vt. 接上插头
plug... in 将……插上插头
unplug vt．将……的插头拔下
例：No wonder your stereo isn't working. You didn't plug it in!
（难怪你的立体音响没声音，你没有接上插头嘛！）
Unplug the TV before you go to bed.
（睡前将电视机的插头拔下来。）
9. monitor n．显示器
10. include vt．包含／括
例：Is service included in the bill?
（账单中包括服务费吗？）
11. deal n．交易，买卖
12．switch vt. 改变，转换
switch A for B 用A换取B
= exchange A for B
例：Can I switch my watch for your finger ring?
（我可以用表来换你的戒指吗？）