Although the complete solution of mathematics is all in the mathematics book, this book will analyze every problem in the book thoroughly, and only by learning what is in the book can we improve it.

The last problem for the junior champion in Huanggang to consolidate the foundation is to improve it, which is very difficult.

A piece of cowhide test paper, the specific name has been forgotten. The test questions are close to the test questions and test sites. You can have a try.

It is difficult to win the championship lightly, but it is difficult to improve the title.