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What's so good about the tutorial book published by Beijing Normal University last semester in the second day of junior high school?
The case analysis of winning the championship or the champion is light, and the notes of the champion are heavy.

If you use the tactics of asking questions about the sea, I suggest you choose a workbook called Asking Questions about the Sea, which is very thick, but I don't know if you can buy it now, or "Grand View of Test Sites" or "Decision Making for Solving Problems". The most direct way is to ask questions from teachers or find them online.