Winged cyclists at Olympic opening ceremony preview
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Organisers release preview of Olympics opening ceremony

The opening ceremony of the London Olympics is due to take place later after seven years of preparations.

The three-hour spectacle in the Olympic Stadium is expected to be viewed by a global TV audience of 1bn.

Organisers have released a glimpse of the spectacular, as the BBC's James Pearce reports.

  • 27 Jul 2012
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