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20. Sample Essay 1: The issue of whether machines are an advantage or disadvantage to humans is a controversial one. On the one hand, humans are more and more dependent on machines. On the other hand, machines are making our lives better and better. However, in the final analysis, I believe that the advantages of machines outweigh their disadvantages. One reason for my belief is that machines have made our lives much easier than before. For example, with help of my computer, I can navigate on the internet everyday, searching for the information I need, while my automatic washing machine is doing my laundry for me. My mobile phone connects me with my friends and my office wherever I go. I cannot image what my life would be like without all these machines and devices. Another reason for my belief is that machines can do many dangerous work for us. For example, a robot bomb expert can dismantle a bomb for the police so that no one will be hurt. Other robots can work under extreme weather conditions. Perhaps the best reason for my belief is that machines have opened more and more possibilities for humans. For instance, a spaceship can take us to outer space where we | 
