2. The knowledge points from compulsory one to compulsory five are very important, because it is mainly to test the knowledge of these five books, so it is very important.

3. Every book has the content of the exam, depending on what knowledge points are tested, so the knowledge of every book should be easy to learn.

We must lay a good foundation for the college entrance examination, so we must lay a good foundation for a book.

It is recommended to buy a copy of "Basic 2000 Questions", because this book can practice the basics and is good for your math.