Photo taken on June 7, 2011 shows the first electric multiple unit (EMU) for Rio de Janeiro in Changchun, capital of northeast China's Jilin Province. Rio's new metro Line 4 links the city's tourism district with the western Barra da Tijuca neighborhood, where many of the Olympic events are slated to take place. The key Olympic transport line features China-made trains designed and manufactured by the Changchun Railway Vehicles Co, a subsidiary of CRRC, one of China's biggest train makers. [Photo/Xinhua]
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