Since last year, city streets around China have seen colorful shared bikes, which people can r{#blank#}1{#/blank#}with a smartphone app and park wherever they choose. To r{#blank#}2{#/blank#}traffic 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{#blank#}3{#/blank#} 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{#blank#}4{#/blank#} 1,000 yuan for stealing a shared bike.

    At the same time, the d{#blank#}5{#/blank#} 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{#blank#}6{#/blank#}.

    Mobiles has credit(信用) scores for each u{#blank#}7{#/blank#} 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 f{#blank#}8{#/blank#}to below 80.

    However, punishment may not be the b{#blank#}9{#/blank#}way to stop shared bikes from being stolen or damaged. Bike-sharing services will work well only if people follow the rules and show r{#blank#}10{#/blank#}for the bikes and others.