Television(电视):
There is no doubt that television has been one of the most important communication technologies in history. Televisions are switched on an average of seven hours a day in households. Debates continue about the mediums effects on children, culture, education, politics, and community life.
Critics say that television feeds a constant stream of simplified ideas and sensationalistic images, that it has a negative effect on political campaigns and voting patterns, that it destroys local cultures in favor of a bland national culture, and that it has encouraged the growth of an uncritical and passive audience.
Defenders say that television provides a great deal of high-quality educational and cultural programming, and that it is the major source of national and international news and information for most citizens.
As the Canadian writer Marshall McLuhan pointed out, perhaps nothing has been more responsible for creating the global villagethe sense that we can see and hear events anywhere in the world as they happen, and so can feel more connected to other places.
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