Why do people use a computer to control a robot?

A robot cannot think or do things alone. People use a computer to control it. Today, robots are becoming useful in our lives. They can help us to save a lot of time and work. A robot can do the same work for 24 hours, and yet, it does not complain or get tired. In the US, people use robots as security guards in some important places. These robots can listen for certain noises and send signals for help if there’s trouble or danger. In Japan, people use robots in factories to build cars. In the future, scientists will design many types of intelligent robots. Their robots will help us do many more complicated things. However, some people do not like robots. They fear that one day robots will be too powerful.
33. Why do people use a computer to control a robot? 
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34. How many hours can a robot do the same work?
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35. Does the word “it” in the text refer to a robot?
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36. In Japan, what do people use robots in factories to do?
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37. Do some people fear that one day robots will make too much noise?
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