“叮叮当当”，门口挂着的风铃发出清脆的声音，有人光顾电脑咖啡屋了。“嗨，你好！我叫小蔡，我找大懒猫，听说他对电脑挺在行，想请教他几个问题。”“我就是，有事您说话。”（自鸣得意状）“我听同学说上网可以做很多事，可至今没在网上走一遭，不知道上网能干啥。” “通 “Ding Ding Dong,” the wind chimes hanging in front of the house made a crisp sound, someone patronized the computer cafe. “Hello, my name is Xiao Cai, I am looking for a big lazy cat, I heard that he is good at computers and would like to ask him a few questions.” “I am, something you say.” Students say that the Internet can do a lot of things, but can not go online so far, do not know what to do online. "