Seller: liu xing, Nanjing, JS, China
paperback. Condition: New. Paperback.Pub Date:2021-07-01 Publisher: Hunan Children's Publishing House The content of this set of books is based on middle school textbooks. and is based on the knowledge of junior middle school mathematics. physics. chemistry and biology. It guarantees rigor and logic. Based on a strong foundation. we use humorous cartoons. easy-to-understand language and scientific celebrities to introduce important knowledge concepts. formula theorems. experimental investigations. cutting-edge technolo.