Reading comprehansion: Read the passage below and answer the 3 next questions.
Computers are good tools. The internet is also good. But some people spend too much time online. Doctors say this is a new sickness. They call this sickness Intenet Addiction Disorder (IAD). People with IAD are online think, a lot. They spend hours messaging or playing online games. They don't take a break to eat or sleep.
About these questions: How many hours a day are you online? When you are not online, are you thinking about playing a computer game or checking messages? Do you get angry when you can't play game?
Doctors give advice: First, ask yourself "Why am I online a lot?" then try to take a break. For example, don't use computer every day. In this way, you enjoy your life with other friends.

What is the reading about?