According to media reports, the London stadium is other Olympic stadiums in terms of steel used.
| A．as 75% light as | B．75% lighter as |
| C．75% lighter than | D．as light as 75% |
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According to media reports, the London stadium is other Olympic stadiums in terms of steel used.
| A．as 75% light as | B．75% lighter as |
| C．75% lighter than | D．as light as 75% |
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