屏幕从主题中的导航图标选择。
合理安排、使用超文本及导航图标等链接功能，实现了课件的交互性。
Hyper text and navigation icon were arranged and used reasonably in order to achieve strong interaction.
合理安排、使用超文本及导航图标等链接功能，实现了课件的交互性。
Hyper text and navigation icon were arranged and used reasonably in order to achieve strong interaction.
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