“ The price of books for our students is just getting higher and higher and ,along with the rising cost of tuition( 学费 ) , it’s killing these students, ” said Peter Jason, a college professor. “Remember, students are one of the poorest proups of people in America. Almost half of them have at least one part-time job. In fact, one of my students has three jobs. And she still manages to have high scores and go to school full-time.” Textbook prices are usually high. Adding to that problem, many college teachers change textbooks year after year; they either upgrade to a new edition( 版本 )or change to a different textbook. This further hurts students because if a teacher no longer uses a textbook, that book has no resale value. Dr . Jason decided to make life a little easier and a lot cheaper for his students by writing his own book on public speaking, “many books have an increased price because of CD-ROMs, lots of color photographs and pictures. I talked to my students, and many of them, like me prefer to keep things simple. So a few years ago, I wrote my own textbook .I made sure that it was simple. Compared to most of other public speaking books, mine is half the number of pages, and one-third the price. That is $30 istead of $90. when I wrote a second edition last year ,students only had to buy the 35 new pages. For only $7.00, they had almost a new book”