Invention changed the world and changed our lives. The price of bicycle is cheap, the whole is not heavy, convenient for us to travel, can exercise our body, is good for health, will not pollute the environment, is very beneficial to us and the world. Television opens our eyes to the world. It is mainly used to relax themselves and bring happiness to themselves. It has a lot of information. It can benefit our study, but also damage our vision and will.
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