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24岁初产妇,足月妊娠,胎儿估计3700g,枕左前位,儿头高浮,胎心140次/分,骶耻夕卜径18cm,对角径<11.5cm,最恰当的分娩方式是下列何项

A. 给予试产机会
B. 阴道自然分娩
C. 产钳助产术
D. 剖宫产术
E. 催产素静脉点滴

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【F1】Much of the language used to describe monetary policy, such as steering the economy to a soft landing or a touch on the brakes, makes itself sound like a precise science.Nothing could be further from the truth. The link between interest rates and inflation is uncertain. And there are long, variable lags before policy changes have any effect on the economy.【F2】Hence there is an analogy that likens the conduct of monetary policy to driving a car with a blackened windscreen, a cracked rearview mirror and a faulty steering wheel.Given all these disadvantages, central bankers seem to have had much to boast about of late. Average inflation in the big seven industrial economies fell to a mere 2.3% last year, close to its lowest level in 30 years, before rising slightly to 2.5% this July. This is a long way below the double-digit rates which many countries experienced in the 1970s and early 1980s.It is also less than most forecasters had predicted. In late 1994 the panel of economists which The Economist polls each month said that America"s inflation rate would average 3.5% in 1995. In fact, it fell to 2.6% in August, and is expected to average only about 3% for the year as a whole.【F3】In Britain and Japan inflation is running half a percentage point below the rate predicted at the end of last year, this is no flash in the pan; over the past couple of years, inflation has been consistently lower than expected in Britain and America.【F4】Economists have been particularly surprised by favourable inflation figures in Britain and the linked States, since conventional measures suggest that both economies, and especially America"s, have little productive slack.America"s capacity utilisation, for example, hit historically high levels earlier this year, and its jobless rate(5.6% in August)has fallen below most estimates of the natural rate of unemployment—the rate below which inflation has taken off on the past.Why has inflation proved so mild The most thrilling explanation is, unfortunately, a little defective.【F5】Some economists argue that powerful structural changes in the world have upended the old economic models that were based upon the historical link between growth and inflation. 【F4】

Picture-taking is a technique both for reflecting the objective world and for expressing the singular self. Photographs depict objective realities that already exist, though only the camera can disclose them. And they depict an individual photographer"s temperament, discovering itself through the camera"s cropping of reality.【F1】That is, photography has two directly opposite ideals: in the first, photography is about the world and the photographer is a mere observer who counts for little; but in the second, photography is the instrument of fearlessness, questing subjectivity and the photographer is all.【F2】These conflicting ideals arise from uneasiness on the part of both photographers and viewers of photographs toward the aggressive component in "taking" a picture.Accordingly, the ideal of a photographer as observer is attracting because it implicitly denies that picture-taking is an aggressive act. The issue, of course, is not so clear-cut. What photographers do cannot be characterized as simply predatory or as simply, and essentially, benevolent. As a consequence, one ideal of picture-taking or the other is always being rediscovered and championed.An important result of the coexistence of these two ideals is a recurrent ambivalence toward photography" s means.【F3】Whatever are the claims that photography might make to be a form of personal expression just like painting, its originality is closely linked to the power of a machine.The steady growth of these powers has made possible the extraordinary informativeness and imaginative formal beauty of many photographs, like Harold Edgerton"s high-speed photographs of a bullet hitting its target or of the swirls and eddies of a tennis stroke.【F4】But as cameras become more sophisticated, more automated, some photographers are tempted to disarm themselves or to suggest that they are not really armed, preferring to submit themselves to the limit imposed by pre-modern camera technology because a cruder, less high-powered machine is thought to give more interesting or emotive results, to leave more room for creative accident.For example, it has been virtually a point of honor for many photographers, including Walker Evans and Cartier Bresson, to refuse to use modern equipment. These photographers have come to doubt the value of the camera as an instrument of "fast seeing". Cartier Bresson, in fact, claims that the modern camera may see too fast.This ambivalence toward photographic means determines trends in taste. The cult of the future(of faster and faster seeing)alternates over time with the wish to return to a purer past when images had a handmade quality.【F5】This longing for some primitive state of the photographic enterprise is currently widespread and underlies the present-day enthusiasm for daguerreotypes and the work of forgotten nineteenth-century provincial photographers.Photographers and viewers of photographs, it seems, need periodically to resist their own knowingness. 【F1】

面先露的常见原因有

A. 骨盆狭窄
B. 头盆不称
C. 腹壁松弛
D. 脐带过短
E. 胎儿畸形

【F1】The value which society places on work has traditionally been closely associated with the value of individualism and as a result it has had negative effects on the development of social security.It has meant that in the first place the amount of benefits must be small lest people" s willingness to work and support themselves suffers. Even today with flat rate and earnings-related benefits, the total amount of the benefit must always be smaller than the person"s wages for fear of malingering."The purpose of social security," said Huntford referring to Sweden"s comparatively generous benefits, "is to dispel need without crossing the threshold of prosperity." Second, social security benefits are granted under conditions designed to reduce the likelihood of even the boldest of spirits attempting to live on the State rather than work. Many of the rules surrounding the payment of unemployment or supplementary benefit are for this purpose. Third, the value placed on work is manifested in a more positive way as in the case of disability.【F2】People suffering from accidents incurred at work or from occupational diseases receive preferential treatment by the social security service compared with those suffering from civil accidents and ordinary illnesses.Yet, the stranglehold which work has had on the social security service has been increasingly loosened over the years. The provision of family allowances, family income supplements, the slight liberalization of the wages stop are some of the manifestations of this trend.【F3】Similarly, the preferential treatment given to occupational disability by the social security service has been increasingly questioned with the demands for the upgrading of benefits for the other types of disability.It is felt that in contemporary industrial societies the distinction between occupational and non-occupational disability is artificial for many non-occupational forms of disability have an industrial origin even if they do not occur directly in the workplace.【F4】There is also the additional reason which we mentioned in the argument for one benefit for all one-parent families, that a modern social security service must concentrate on meeting needs irrespective of the cause behind such needs.The relationship between social security and work is not all a one-way affair.【F5】It is true that until very recently the general view was that social security "represented a type of luxury and was essentially anti-economic." It was seen as merely government expenditure for the needy.As we saw, however, redundancy payments and earnings-related unemployment benefits have been used with some success by employers and the government to reduce workers" opposition towards loss of their jobs. 【F1】

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