Butterfly becomes a small problem is all multiple-choice questions. English and history are very easy to use, and it won't take long to learn them. A group of about 30 minutes contains many knowledge points of test sites, which can be a good supplement to review knowledge points.

"Basic 2000 Questions" has a lot of questions, but fortunately, the questions are not difficult, which is the right way to lay the foundation. Seeing the answer is like chatting.

"Butterfly Must Brush" has basic knowledge and error-prone chapters, and the whole has some parts. Test sites can be arranged according to the chapters of the textbook. You can brush while reviewing the textbook, and you can review every major knowledge point.

The answer to "problem solving talent" is very detailed. Sometimes when you do a question, you need to look at the answer to understand it. Weak brush this answer is very friendly.