Example sentences of "is [adv] difficult [verb] " in BNC.

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31 Because it is so difficult to see in this dark environment , their eyes , like those of insectivorous bats , have become very small .
32 It is often the negative power I perceive within myself that is so difficult to account for , or control .
33 ‘ I find it impossible to make my hair look neat and stylish for any length of time because it is so difficult to manage .
34 It also explains why experience in the classroom is so difficult to communicate .
35 It would certainly be unsafe to generalise from a quality that is so difficult to establish , that English therefore ‘ allows its users to approximate to neutral , objective description ’ .
36 There is a steady shuffle of people leaving once the film has started as they find it is so difficult to follow that the experience is frustrating .
37 If it is so difficult to value a small piece of the environment like Twyford Down , how will it ever be possible to cost the ozone layer ?
38 This eighteenth-century controversy may be insoluble as it is so difficult to determine the extent of rural inoculation , and the proportion of deaths attributable to smallpox in country areas .
39 For instance , after completing some lower order questions about individual features in a Victorian gaol , pupils were asked to synthesise this information : " Explain why it is so difficult to escape from this prison . "
40 When light dawns as to what we are fighting for and why it is so difficult to achieve , sometimes we can break off and laugh with relief and take the steps to reconciliation that , again and again and again seem to be necessary .
41 ‘ That is precisely what is so difficult to achieve in performance .
42 " Can you tell me why " , he asked , " it is so difficult to get business leaders to come and help ? "
43 And what can the cure-seekers do about a disease which is so difficult to understand ?
44 A remarkable illustration of the explanatory convenience of egoism is the concept of the ‘ selfish gene ’ , through which the rational egoism which is so difficult to find in the hopelessly illogical world of men is finally tracked down in our ultimate genetic constituents .
45 But the language is so difficult to learn that there are times when I feel completely stupid and understand hearing people 's difficulty in learning sign language .
46 The real problem , of course , is that with only one prize in the art world it is so difficult to select only four artists who have made a major contribution over a year .
47 There are good biological reasons for why it is so difficult to produce drugs that will knock out viral infections .
48 We can hypothesize that he would not have survived the rigorous processes of peer review in the British system and it is exceedingly difficult to envisage him negotiating the hazards of leading a party from the dispatch box in the House of Commons .
49 The criterion of land under cultivation is crude , and resists refinement : it is exceedingly difficult to say whether in a particular country in a particular decade or generation the rate of growth was steady ; in some places at some times there may well have been local and temporary declines .
50 The dual role of the state both to support business and provide finance on the one hand , and to be the guardian of social welfare and redistributor of resources on the other is exceedingly difficult to manage coherently ( Steiner , 1975 ) .
51 Item No 5 : it is extremely difficult to date these religious medallions , struck to be blessed by a priest and kept as a talisman .
52 The conflict between efficiency and effectiveness , particularly in sensitive services like education and social services , is extremely difficult to resolve , and is best left to individual judgments , which really means the judgment of those most concerned with the development of the service .
53 Although , as we have seen , it is possible to step outside this framework , and find an alternative that seems to fit the life style of the person who has died better than a traditional church funeral , in practice it is extremely difficult to do this .
54 Dressing is a two-handed activity which is extremely difficult to do with only one hand .
55 It practice , this is extremely difficult to do ( Adams , 1976 ; Andrews , 1975 ; Shephard , 1967 ; Van Gundy , 1985 ) .
56 Firstly it is wrong and secondly it is extremely difficult to implement .
57 The act however , is extremely difficult to enforce , and fines have so far been nominal .
58 For obvious reasons , it is extremely difficult to set up a large-scale trial of dietary treatment among patients who are seriously disturbed .
59 In many cases it is extremely difficult to carry out tests under truly controlled conditions , because the external conditions are changing throughout the time period in question .
60 Oxygen has been omitted because nearly all the oxygen in a planet resides in non-volatile oxides and silicates and it is extremely difficult to estimate how much of this oxygen has been liberated into more volatile forms and conversely how much oxygen originally in volatile forms has been lost by combination with various oxides and silicates .
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