1: I choose the Touch Sensor and the Infrared Distance Sensor because I think both of them are applied a lot in my daily life. Thus, I want to find out how they work. I think the Touch Sensor can be used to create an escalator which can automatically change it speed when people are approaching to the escalator. For the Infrared Distance Sensor, I can be used for an alarm.
2: The robotic arms help the disable be able to touch things and lie things again.
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