1.OG (required test): OG has three books, which contain all the knowledge points and inspection points of GMAT, and there are a large number of real questions and similar exercises, which are of high reference value. We can do the exam questions from time to time the first time, brush them carefully the second time, and brush the wrong questions the third time.

2. Question 300: This is the official GMAT question base. It is 300 questions selected from the 700+ high score library, all of which are selected from the real questions over the years, suitable for small partners who want to sprint 700+. GMAT can be bought for $29.9 in official website and can also be found on major websites.

3.PREP (required before the formal model test): The model test software provided by GMAC officially has the same interface as the real question and is also adaptive, and the difficulty of the question is similar to that of the real question. We can prepare for the exam in the later stage. You can go to official website to buy the original. After registering an account, you can use two sets for free, and the remaining four sets need to be purchased. The original text is very precious, so it is necessary to give the questions strictly on time. PREP also has a cracked version, which can be used as a usual exercise to adapt to the exam and adjust the pace of doing the questions.

4. Machine Classics (required before the exam): Candidates share the problems encountered in the exam. Machine scripts change every once in a while. We can practice one week before the exam, and we may encounter the same problems in the exam, which will save us time. Focus on practicing math and reading, which are more comprehensive.

5. Mahatan (Manhattan): Partners who just started to learn GMAT can focus on it. If the foundation is weak, you can look at the test sites inside, and then Manhattan and OG will be combined. Generally, I will brush OG first, and then watch Manhattan. Some incomprehensible problems in OG may be that I suddenly realized when I was watching Manhattan.

6. Yang Peng's long and difficult sentences are the analysis and translation of GRE and GMAT. There are four chapters, including introduction of difficult sentences, grammar breakthrough, grammar improvement and detailed explanation of difficult sentences. Small partners with weak language foundation can focus on it and strengthen their vocabulary.

7. "Chen Xiangdong Mathematics": If the correct rate of evaluating the mathematics part is less than 90%, you can look at this, understand the knowledge points first, and then do the questions. If the correct rate is high, you can try to do the problem directly.