Example sentences of "which have shown a " in BNC.

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1 The opinion polls , which had shown a small move towards the Tories in the early months of 1982 , now showed a large and growing Conservative majority .
2 The economy of the Netherlands Antilles , based upon oil refining , financial services and tourism , was boosted in the first quarter of 1990 by an increase of 6 per cent in the number of tourists compared with the same period of 1989 , which had shown a similar increase over the previous year .
3 THE study was commissioned following research in other parts of the country which had shown a marked decline in the number of ponds remaining in these areas .
4 He called for a ‘ radical ’ agenda that would reach out to the groups of voters , especially in the South of England , which have shown a marked reluctance to support Labour at four elections .
5 Supporting evidence for the view that the right hemisphere may participate in the recovery from aphasia comes from findings obtained with the regional cerebral blood flow technique ( Meyers , Sakai , Yamaguchi , Yamamoto and Shaw , 1980 ) and from studies of dichotic listening performance which have shown a disproportionate increase in the left ear score with recovery ( Pettit and Noll , 1979 ) , at least among certain categories of aphasic patient ( Castro-Caldas and Botelho , 1980 ) .
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