Since last year, city streets around China have seen colorful shared bikes, which people can rwith a smartphone app and park wherever they choose. To rtraffic jams and air pollution, many cities have offered bike-sharing, but sometimes dreams can turn sour.

    As shared bikes become more popular, problems keep showing up. According to news reports, shared bikes are b treated（对待）by users. When people are using the bike, some of them just throw it onto streets and even into ditches. Recently, a man in Shanghai was f 1,000 yuan for stealing a shared bike.

    At the same time, the d to the QR codes on bikes has brought huge losses to bike-sharing companies, like Mobikes. If the QR-code is damaged, the bike cannot be used any more. It can cost several hundred yuan for the company workers to find a lost bike and get it r.

    Mobiles has credit(信用) scores for each u Punishment(处罚) will be taken in case of users' bad behavior. Bike rental will go up to five yuan per minute if the score fto below 80.

    However, punishment may not be the bway to stop shared bikes from being stolen or damaged. Bike-sharing services will work well only if people follow the rules and show rfor the bikes and others.