题目内容
The pattern of text organization mentioned in the video is problem - solution Pattern.
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How to overcome the fear in the inner world according to the video? The trick is to understand them, know why they're there – and then overcome them when it's necessary to take action in order to achieve your goals.
当按键数目小于8个应采用_____式按键，当按键数目大于60个应该采用_______式按键。
2行4列的矩阵按键可以提供多少个按键？
矩阵按键可以向独立按键查询方式不同，一般采用行列扫描的方法来确定键码。
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