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It is known to us all that the computer is the most important invention in the 20th century. It has been developed a lot since it appeared. Also, our daily life has greatly changed because of it. A computer can think and remember things like man, but it is millions of times faster than human begins. As a result, computers have been used in the fields of agriculture(农业), industry(工业), education(教育) and so on. For example, we can learn our lessons at home by using a computer instead of going to school. Computers have entered our daily life. So it is important for us to learn how to use a computer. And we must start right now.
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干嘛
你煞笔啊
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