According to relevant data, the thickness of a book is about 1cm.
Mathematics is a book published by Beijing Jiaotong University Press from June 5, 2006 to 2006 10, by Tan Jiefeng. One of the three-dimensional series textbooks of planning mathematics in higher vocational colleges is the elementary mathematics part of mathematics in five-year higher vocational colleges and secondary vocational schools.
Teacher's Personal Summary of Annual Assessment Form 1
"Being a good teacher" is the goal pursued by many teac