说明：对于这一部分，你有30分钟的时间在校园网站上写一则广告，出售你在大学时使用的一些课程书籍。您的广告可能包括对其内容、条件和价格的简要描述，以及您的联系信息。你应该写至少120个单词，但不超过18

Title: Selling College Course Books

Hello everyone! I am selling some of my college course books that I used during my university years. These books are in excellent condition and have been well taken care of. They cover a wide range of subjects such as English, Mathematics, Physics, Chemistry, and History. The content is comprehensive and easy to understand, making them perfect for students who want to improve their knowledge or prepare for exams.

The price for each book is very reasonable, starting from $5 to $15 depending on the book's condition and rarity. If you are interested in any of these books, please do not hesitate to contact me at [Your Email Address] or call me at [Your Phone Number]. I will be more than happy to answer any questions you may have and arrange a convenient time for you to come and check out the books.

Thank you for considering buying my college course books. I hope they will be helpful to you in your studies.