in morden society ,more and more people like riding bikes.riding bikes become a most popular way,because it is great for people.it can help people save money and energy.it is a low cost transportation.and you donot worry where you put the bike.maybe at a corner,it donnot need much spare.they just need less spare than cars does.it also can avoid
air pollution.tit is very healthy for people.because people can exersice by this way.i suggest eveyone rides bikes as possible as we can.it is not only good for environment ,but aiso keeping health. 我可是手打的,绝对原创 望采纳