Review all the lessons in this unit and see if you can understand the main idea of each lesson.
复习这个单元的所有课文，然后看看你们是否理解每篇课文的大意。
Submit a short description justifying your lesson plan and setting it in the context of the rest of your unit.
上交简短的叙述，解说采用该设计的理由及如何将这节课融入整个课程计划。
This book is consisted of two volumes; there are 55 lessons and 11 lessons. There are five lessons in each unit, the fifth lesson is to summarize and review, without new language points added.
全书分为上下两册，共有55课，11个单元，每个单元各有5课，第5课为单元总结复习课，不再出现新的语言点。
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