Example sentences of "had be shown to be " in BNC.

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1 Some authorities maintained that it was the first time a single drug had been shown to be useful in controlling psychotic patients .
2 Indeed , the practitioners had been shown to be very highly motivated in this subject .
3 A dogma that once looked profound had been shown to be no more than a simplistic diagram ; and social reality is too complex , in the end , to be embraced by any single theory of history or of class .
4 All possible nonamer peptides with proline at position 2 were synthesized for CSP , LSA-1 and SHEBA ; where a sequence had been shown to be polymorphic variant peptides , for example cp10 , cp16–18 , were also synthesized .
5 Today we might say that it had been shown to be different from itself .
6 Both these denials had been shown to be false .
7 The confounding factors were patients ' characteristics that had been shown to be predictive of increased perinatal risk .
8 And Robert Urquhart had been shown to be lying to her about more than his affections .
9 Finally , the report noted that the claim that only authoritarian governments could handle Third-World reform had been shown to be " patently false " .
10 The patient returned to eating only foods that had been shown to be safe .
11 This probe had been shown to be better than actin as a control for the amount and quality of total ribonucleic acid loaded .
12 Once the post-revolutionary fervour had simmered down and the revolutionaries had become convinced of their victory over Keynesianism , questions started to be asked as to why , from 1936 onwards , so many of their august mentors , some of whom had won Nobel Prizes , had subscribed to a point of view which had been shown to be so palpably erroneous .
13 Alison Cleland , a development worker with the Children 's Rights Development Unit , said that existing legislation had been shown to be completely ineffective in safeguarding young workers ' welfare .
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