Junior high school chemistry for one year, but the score is 100 points, is the most easy to earn points in the middle school examination. However, in many areas, children who only learn in the third year of junior high school, have tight time, heavy tasks, and poor adaptability will eat more

Junior high school chemistry for one year, but the score is 100 points, is the most easy to earn points in the middle school examination. However, in many areas, children who only learn in the third year of junior high school, have tight time, heavy tasks, and poor adaptability will suffer losses. So we prepared this book, a book covering junior high school basic knowledge + comprehensive knowledge, pre-study, review can be used. Junior high school students collected and trained in advance to be prepared.