Junior high school Olympiad, curious about your strength. Don't think of junior high school olympiad as simple, it's better to do it step by step. This is a book with three levels of difficulty: low, medium and high. You'd better buy them all. I dare not say anything else. If you master the middle difficulty, you will be the first prize of the national junior high school mathematics league (note that you can master it all). If you master the hardest part, you can also get a prize in the Hope Cup.

The first book (click on the gold medal in solving Olympic math problems in junior high school) is basically not difficult from grade one to grade three, but you must finish it in grade one, so that if I don't say anything else, you can participate in the Hope Cup in grade one.

The second book, which is also my favorite, accompanied me through the whole junior high school. It can be said to be a classic. I must read all three books in the second grade (including the third grade), so that I can say with certainty that the first prize of the National Junior Middle School Mathematics League (the second grade group) won the Hope Cup. Absolutely relaxed.

The third book (national gold medal Olympic Games textbook general edition) is really difficult, but you have mastered all the above four books. These three books should not be too difficult to solve.

Conclusion: It doesn't matter whether you read the third book or not. If you read the first two books, you will only win the first prize in the national league. Reading the third book (whether it's grade three or grade two) just makes you surpass others on the basis of winning the prize.

Ps: Watching the Olympic Games requires perseverance and perseverance. Can't give up.