Example sentences of "[am/are] know to " in BNC.

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1 Other cases are known to Amnesty International , where asylum seekers travelling without valid travel documents have been prevented by airline personnel , sometimes with the knowledge of Immigration Officers , from applying for political asylum in this country .
2 Waiting lists are known to be an inaccurate indicator of need , as many doctors do not refer patients if they know the wait will be long ( this is as true for instance for hearing aids as it is for hip replacements ) .
3 Brothers , choose seven men from among you who are known to be full of the Spirit and wisdom .
4 Ministers are known to be bracing themselves for a series of defeats .
5 It feeds on a wide variety of fish — 43 different species are known to be taken as prey .
6 Almost 80 per cent of the female seals in the Baltic are known to be sterile , primarily as a result of PCB poisoning , and by the year 2000 , grey seals in the Baltic may well have become extinct .
7 Reserves are known to be low in Sudan , and thought to be low in Ethiopia .
8 It is the ‘ underground spring , so to speak ’ of the properties of a thing which are known to us by our senses .
9 Although they always look so tempting on the garden centre shelf , they are known to be very hard to please .
10 Ten ministers are known to be members of the Apprentice Boys of Derry .
11 People who are used to having responsible jobs at home or in the office and who are known to be good managers and organizers can not understand why suddenly the simplest task seems to be beyond them , and this makes them feel out of control and very unsafe .
12 But I have no doubt that all are known to God . ’
13 After ballots of parents , 215 schools have so far opted out : but another 2,000 are known to be keen to do so , given that grant-maintained status offers them money and freedom .
14 This could be in his favour , as the penalties for failing to hit the targets at the par-fives are known to all television viewers .
15 ‘ Put it this way , ’ says D c Muggleton , ‘ Sixty-five per cent of all the antique dealers in this town are known to us . ’
16 As the stars are known to the Night .
17 Well , note first of all that the various gases that are thought to have made up the early atmosphere contain most of the main elements that are known to be essential to life : carbon , nitrogen , sulphur , hydrogen , and oxygen — though the oxygen was not ‘ free ’ , but was combined for example with carbon in carbon monoxide .
18 All these gases are known to be highly chemically reactive .
19 This covers all types of mental handicap , including mild cases where social and environmental factors are known to be important but the exact nature of the problem is less well known .
20 They may be at risk because of identifiable genetic disorders which are known to be present , or because of the age of the mother .
21 Once this has occurred , risks are known to be very high , in some cases one in four for further births .
22 Because viruses are known to be implicated in the development of certain cancers , it was natural to investigate any possible relationship between herpes infection of the cervix and cervical cancer .
23 Examinations need to be carried out only at infrequent intervals and in most cases only those aspects of the product or container that are known to be those most likely to undergo change need be examined .
24 River insects develop wings in the last stage of their life cycle , and dragonflies are known to be able to fly many miles .
25 They too are raucous , and they are known to the police .
26 This contrasts with humic acids which are rich in carboxyls and are known to complex radio-nuclides to form colloidal suspensions , which can be moved long distances by groundwater .
27 The good they have done and the influence they have had are known to God and cherished in the hearts of those who remember gratefully their words and their work .
28 Female staff of childbearing age , particularly women who are known to be pregnant , require special protection from radiation hazards and there are codes of practice which apply to radiotherapy and X-ray procedures .
29 Psychological stressors are known to be important contributory factors in relation to accidents .
30 Some fragments are known to nearly everyone , but not always who said them and in which play .
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