中学生带手机的利与弊（Advantages and disadvantages of mobile phones for middle school students）.docVIP

中学生带手机的利与弊（Advantages and disadvantages of mobile phones for middle school students） Advantages and disadvantages of mobile phones for middle school students.Txt Advantages and disadvantages of mobile phones for middle school students 1) the background of the selected topic With the rapid development of science and technology, more and more high-tech products bring convenience to peoples life -- mobile phone is one of them. But at the same time, similar to the mobile phone such high-tech products also imperceptibly for human brings a series of negative effects, listen to the mobile phone is not good for the ears, the air conditioning blowing more of the body is not good, not good for the environment, the computer in the eye is not good, not good for the body and mind. Therefore, I think it is a very valuable question to choose and to study. Introduction In an era when technology is leading the world, mobile phones are not the private property of powerful people. Remember at the beginning of 90s, saw the big brother, like a big brick, can use its identity is certainly not general. Who would have thought that more than 10 years later, the mobile phone is the old man in the hands of the machine, flying into the ordinary students. In the streets and lanes, even on the campus, the mobile phones of middle school students have become a beautiful landscape almost everywhere. Into todays high school campus, we will find that many middle school students have their own mobile phones. In a sense, mobile phones have become a very important part of their lives. The number of middle school students who have mobile phones is increasing day by day, and the grade of mobile phones is greatly increasing. From the cheapest to the most expensive to take pictures, various brands, styles of mobile phones can find their fans in the campus. The popularity of mobile phones does bring a lot of benefits. But materialist dialectics tells us that everything has two sides. When we analyze problems