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AP Central for Education Professionals | College Board

Course materials, exam information, and professional development opportunities for AP teachers and coordinators.

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查詢 「leaf outline types」的人也找了：

  1. cordate leaf
    2.
  2. leaf shapes
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  3. ovate leaf
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  4. lanceolate leaf
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  5. leaf apex types
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  6. leaf margin
    7.
  7. leaf shapes and examples
    8.
  8. leaf margin types
    9.