2013年12月四级听力模拟试题十一_大学英语听力

2013年12月四级听力模拟试题十一

　　Personal computers have revolutionized countless aspects of modern life. With scanners and digital cameras, for example, the world of publishing and photography has entered the home. Long-distance learning has been made possible for students in isolated or distant areas thanks to computer-assisted teaching. Computer games have added a whole new dimension to home entertainment. They are so much fun that they can become addictive.

　　Perhaps no other machine has had a greater impact on our lives than computers. With modems and servers, personal computers can now be connected through telephone lines to create networks of people and businesses who are able to communicate with each other almost instantly by e-mail. Like most aspects of computer culture, the Internet has its positive and its negative side. For example, electronic mail has become so popular and so easy that it has become a problem. In some offices it has reduced real interpersonal relationships and forced employees to read hundreds of useless messages every day.

　　Computer technology has affected virtually every aspect of our lives from satellites in outer space that relay television programs to the microchip in our hand calculator. Computer technology has added considerably to the efficiency and quality of life, but it has also contributed to the stress of modern life, especially in the workplace.