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Which is better, the focus or the help textbook?
1, level of detail: the content of the textbook is richer, including detailed interpretation and; Highlight key points and pay more attention to the analysis of key points and difficulties.

2. Learning efficiency: focus on being more targeted and improve efficiency; The teaching materials are comprehensive and suitable for systematic learning.

3. Summary: Choose tools as needed, focus on improving efficiency, and use teaching materials to help students learn systematically.