Today some people call Amsterdam the“City of Bicycles”because it is a city which is flat and convenient(方便的)for bicycles.
In the 1960s, a group of cycling fans had an i 46. They believed that it would be better for everybody if o 47bicycles were allowed in the city centre. They were hopeful that this would help to save energy, reduce pollution and provide free public transport. The group p 48hundreds of bicycles white and placed them in public places around Amsterdam for people to use. A 49was allowed to take them and use them for short journeys, whether he was a local or a foreigner. Wherever someone finished a journey, they would l 50the bike there for someone else to use. The problem was that it didn’t work –t 51took all the bicycles within weeks!
H 52, more than thirty years later,the“white bike”is back in town---this time with a computer chip(芯片)to r 53its every move! There is a 54less traffic in central Amsterdam. Thanks to the good ideas of lots of people, like the cycling fans in the 1960s, many people around the world have been enjoying city centre streets w 55cars for many years.