People often say: "It is beneficial to open books and read books." However, on closer examination, this statement is not entirely correct. If we are interested in every book, it may not be good to open it. Nowadays, students may all like to read martial arts and romance novels, books and periodicals, and sometimes forget to eat or sleep. Once they get lost in reading, they will be possessed. Then they concentrate on books in class and have no intention to study, and their grades will plummet. Others are attracted by some plots in the book, imitate the characters in the book, and sometimes take the road of crime. Isn't reading killing yourself? This is only the first layer of "opening books is beneficial": opening books is beneficial. And the second floor. The second is that we should have a choice when studying. Don't read unhealthy books that don't help us much. When reading, you should read some books that are beneficial to your physical and mental health and helpful to your study and life. Such a book is a good book. Only by reading well will you not ruin yourself. Some people compare books to friends. If you value books, you will make good friends and make progress. If you don't read good books, of course, you will make friends with people who don't make good friends, and then you will regress. Because near Zhu Zhechi, near Mexico is black! Therefore, only reading will be beneficial to you. Therefore, in my opinion, opening books may not be beneficial. I sincerely hope that every student can read books selectively. Don't lead yourself astray and ruin your life just because you read a wrong book. It is beneficial to open a book. Song Taizong and Zhao Guangyi have said this for more than 1000 years. For thousands of years, it has been accepted by countless people and passed down from mouth to mouth as a wise saying. Parents often teach or urge their children and elders to "study hard", thinking that as long as they study, they will gain knowledge and benefit a lot. Therefore, people often say: "There are thousands of millet in the book", "There is a golden house in the book" and "There is Yan Ruyu in the book". In fact, whether reading is beneficial depends on the quality of reading. That book is a good book, and it is beneficial to open it; And if this book is not a good book but a bad one, it is not only useless but also harmful to open it. In recent years, our books and periodicals market has produced many good books, but also many bad books. Go to bookstores, book stands and book markets, and you will find some bad books everywhere. What flatterer, what harm, what face learning, and so on, this kind of book that teaches people to learn bad will only poison and corrode young readers, without any benefit. As for those books that promote all kinds of negative and decadent ideas, cynicism and philosophy of life, and books that show a yellow and decadent lifestyle, opening books is even more harmful. Most people who talk about the benefits of opening books are well-meaning. When they say that it is beneficial to open books, they mean to read good books. However, the world is very complicated now, and some people really sell bad books to the world as good books for some purpose, especially teenagers. They also say that opening books is beneficial, but it is really harmful to readers. Nowadays, most teenagers are highly motivated and curious, and love reading, but they often lack discrimination. In my opinion, our teachers have the responsibility to remind them to read more good books, at least harmless books, and never read bad books. Not all books are beneficial.