一部特别的移动电话（A special mobile phone）

　　We know that there are usually over ten mobile phone. But look at this mobile phone. Have you found out that there is anything different? Yes, it's a special mobile phone. It has　a simple keyboard with only five keys.It can be preset to call a specific number. Children can call someone by pressing the right key. The new phone is also better for the old people with poor memories. It also sends lees radiation than the mobile phone we use now