The Internet is shaping our lives． We already have online shopping services and mobile payment． However， this is just a start． The worlds leading tech companies are planning to build smarter online communities． （1）　　 It was held in Wuzhen， Zhejiang last year． The development of artificial intelligence（AI，人工智能） was a hot topic at the conference（会议）． If a machine can learn and solve problems as humans do， it can be called AI．

    The company Alibaba uses AI technology in its unmanned supermarket in Wuzhen． There is no salesperson in the supermarket， just a tablet on a desk that says"please smile"． （2）　　 The bigger your smile is， the more discounts（折扣） you will get． Payment is done automatically（自动地） through your Alipay（支付宝）account． When you first enter the supermarket， the supermarket's AI recognizes your face and your account．

    There is also AI that can read lips． （3）　　 It recognizes your mouth，s movements and turns them into voices or text messages． This could be very useful when you are trying to talk to someone on your phone in a noisy place． Police could also use the technology to help them find criminal suspects by lip﹣reading recordings from video cameras．

    （4）　　 Microsoft's chatbot Xiaolce can not only provide useful information， but also chat with people like a real friend． Xiaolce has a WeChat account． After following the account， users can start talking with her． （5）　　 She keeps improving herself by talking with users．

    These technologies are being put into wider use． We may see a smarter world and better lives in the near future．

A． She knows when to comfort you or tell jokes．

B． They discussed this at the World Internet Conference．

C． Sougou brought its lip﹣reading system to the conference．

D． If you smile， it will give you a special discount for your goods．

E． Another type of AI focuses on understanding human emotions．