Прочитайте текст Health questions have been raised by the people who sit all day in front of the vid...: ответ на тест 223129 - Английский язык

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Health questions have been raised by the people who sit all day in front of the video display terminals (VDTs) of their computers. Are computer users getting bad radiation? What about eyestrain? And what about the age-old back problem, updated with new concerns about workers who hold their hands over a keyboard? What about repetitive-action injury also known as carpal tunnel syndrome? What about the risk of miscarriage?
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Who often asks questions about health?

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Health questions have been raised by the people who sit all day in front of the video display terminals (VDTs) of their computers. Are computer users getting bad radiation? What about eyestrain? And what about the age-old back problem, updated with new concerns about workers who hold their hands over a keyboard? What about repetitive-action injury also known as carpal tunnel syndrome? What about the risk of miscarriage?
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Who often asks questions about health?

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You can't carry a computer as easily as you can a newspaper, but you'll find a lot of other things to like about online newspapers.
More than 100 daily papers in the United States and Canada publish electronic editions. You can connect with them using your computer, a modem and an Internet browser.
Online newspapers have the most up-to-date news. Both USA Today and The San Jose (California) Mercury News add stories to their electronic editions throughout the day.
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How can you connect with electronic editions of daily papers?

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Personal computers (PC) are small, relatively inexpensive computers for an individual user. Their price can be from a few hundred dollars to thousands of dollars. All are based on the microprocessor technology that enables manufacturers to put an entire CPU on one chip. Personal computers are used in business for word processing, accounting, desktop publishing. At home, the most popular use for personal computers is for playing games.
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What are personal computers used for?

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Computer keyboard is the set of typewriter-like keys that enables you to enter data into a computer. Computer keyboards are similar to electric-typewriter keyboards but contain additional keys. The keys on computer keyboards are often classified as follows:
alphanumeric keys - letters and numbers;
punctuation keys - comma, period, semicolon, and so on;
special keys - function keys, control keys, arrow keys, Caps Lock key, and so on.
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What are computer keyboards similar to?

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The names of your files are kept in a directory on each disk. The directory also contains information on the sizes of the files, and the dates they were created and updated.
If you want to know what files are on your disk, you can use the DIR command. This command tells MS-DOS to display all the files in a specific directory on a disk. For example, if your MS-DOS disks are in drive A and you use the DIR command, the directory display would look similar to this:
Volume in drive A is DOS 3-3
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What does a directory use for?