Chinese performers rehearse in front of the China Pavilion at the Expo site in Shanghai, China, March 18, 2010. All vehicles entering Shanghai will

- Image ID: W9BFMY
Chinese performers rehearse in front of the China Pavilion at the Expo site in Shanghai, China, March 18, 2010. All vehicles entering Shanghai will
Imaginechina Limited / Alamy Stock Photo
Image ID: W9BFMY
Chinese performers rehearse in front of the China Pavilion at the Expo site in Shanghai, China, March 18, 2010. All vehicles entering Shanghai will have to go through stringent security checks starting next month to ensure the safety of the 2010 Shanghai World Expo. The checks - beginning on April 15 and continuing until November 15 - apply to corporate and private vehicles and trucks, the Shanghai Public Security Bureau said Thursday (March 18, 2010).

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