Passengers buy metro tickets at the Grand Central Terminal in New York, the United States, March 24, 2009.[Shen Hong/Xinhua]
![Passengers buy metro tickets at the Grand Central Terminal in New York, the United States, March 24, 2009.[Shen Hong/Xinhua]](http://images.china.cn/attachement/jpg/site1007/20090326/000bcdb95f1d0b35226313.jpg "Passengers buy metro tickets at the Grand Central Terminal in New York, the United States, March 24, 2009.[Shen Hong/Xinhua]")