Example sentences of "[been] proved that [noun] " in BNC.

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1 It has been proved that creativity is a new development of the mind that can be cultivated .
2 The assumption that large authorities are costly and bureaucratic is wrong : it has been proved that Lothian has low management costs and provides an above average standard of service at low cost .
3 It has been proved that Lothian has low bureaucratic costs and provides an above average standard of services at low cost .
4 But coach experts say it has n't been proved that belts are safer .
5 In tests carried out in both Britain and the United States it has also been proved that non-smokers have far better memory and recall than smokers .
6 It 's not been proved that children living near power cables are more likely to develop leukaemia .
7 The case has not been proved that job evaluation and performance-related pay can be applied to nursing .
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