摘要
AT 6:30 in the morning,Spring got up.At 7 a.m.,he left home and walked 10 minutes to the metro station.The metro system of this city resembled the spider webs of his hometown.In fact,it was denser than spider webs,covering every corner of this city.It would take Spring over an hour to get to his destination on the trains of two metro lines.The first metro was Line 6,with large crowds of people waiting for the train.It had only four carriages and couldn’t hold very many people.