话题：
你可以花30分钟在校园网站上写一则广告来推销你在大学时用的电脑。您的广告可以包括其品牌、规格/特征、条件和价格，以及您的联系信息。那么，你该如何把你的电脑推销出去呢？下面来看看这篇范文吧。
参考范文：
As I am about to graduate and leave the campus, I am going to sell my personal laptop at a low price.
It is a Lenovo ThinkPad that I bought in June, 2017. It is not big, but very functional. It has a four-core CPU, an independent display card of 2G, a hard disk of 500G and a screen of 15.6 inches.
For the last two years, the laptop has served as my faithful aid and helped me finish most of my assignments and my thesis. There has appeared no fault in the process. I owe so much to it. But as my workplace has already offered me a more advanced working laptop, I find there is no necessity for me to have two. And I know that there must be some of my schoolmates who are more in need of the ThinkPad. Therefore, I determined to sell it.
I bought the laptop as the price of 3500 yuan. Now I will sell it at 1500 yuan or less. Anyone interested can contact me via email, and my mailbox is ***@sina.com.
词汇学习：
at a low price廉价，低价
four-core四芯
CPU中央处理器
display card显示卡
hard disk硬盘
faithful忠实的; 忠诚的; 正确的; 信徒
most of大多数
assignments工作; 分配( assignment的名词复数
thesis论文，毕业论文
in the process在此过程中
appeared发表; 出现( appear的过去式和过去分词 )
schoolmates同学，校友( schoolmate的名词复数 )