Recently, the university is about to graduate, and college students are busy writing graduation thesis, ready to make the final defense immediately. Copy shops inside and outside the school are doing well. The printing of papers has also become the daily work of college students. An interview with a reporter found that today's graduates all answered this way. They learned to print papers for review, and the previous revisions need to be printed at least several times. Generally speaking, paper papers need to be printed more than 7 times. According to the statistics of 7.27 million graduates this year, printing graduation thesis requires 4,000 tons of paper and consumes more than 70,000 20-year-old trees. Some colleges and universities said that it is the teacher's responsibility to write down the review and revision opinions at any time during the defense process, and the student's performance certificate in school is the paper version of the test paper, not just the electronic version. For example, it is common to print graduation thesis over 10. A classmate graduated from normal university majoring in advertising this year. He just put down the pen that finished his paper and was about to have a heated debate. His head hurts. If the paper is revised repeatedly, it must be reprinted repeatedly before the tutor can see it. ? This paper has been revised three times. ? This classmate said, first of all, the content needs to be revised, and there are many places that need to be revised, so reprinting is common sense. However, two corrections have been made recently. One minor mistake has been corrected, such as punctuation and typographical errors, and the other is a paper format error. ? These can be seen on the computer, or they must be modified manually. ? This classmate said helplessly, how many times has this happened in the printing house? Yesterday, he visited the Communication University and the Second Foreign Language Institute, and found that the student schools that printed papers almost crowded the surrounding printing houses. In the copy shop, a student complained with a USB flash drive. This has been here four or five times. Revise it every time, and then print it out for the teacher to see the paper version. ? Students complain about graduation thesis every day.