Today, as a greener means of transportation, bike-sharing is becoming more and more popular in many cities. It’s known that it has many advantages. So it’s enjoyed by lots of people.First of all, it’s very convenient for people to go somewhere. Also, it helps to reduce the traffic pressure. There will be less pollution because of bike-sharing. Besides, bike-sharing helps people take more exercise. In this way, it’s helpful to people’s health.However, it also brings some problems. For example, some people throw them away after using bikes. Even some people damage them, and some bikes are stolen.