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问题 单项选择题 A2型题

初产妇，26岁，妊娠38周，双胎妊娠，骨盆检查无异常，双头先露，胎心130～140次/分，宫高39cm，腹围112cm。本例错误的处理为（）

A.做好输液、输血及抢救新生儿的准备

B.严密观察产程变化，注意胎心及宫缩

C.第一胎娩出后行 * * 检查

D.第一胎儿娩出后，等脐带动脉搏动停止后断脐

E.若出现子宫收缩乏力，低浓度缩宫素缓慢静脉滴注

答案

参考答案：D

解析：第一胎娩出后，胎盘侧脐带必须立即夹紧，以防止第二胎儿失血，因此D答案错误。

多项选择题

肌肉收缩的形式有（）

A.等速运动

B.等长收缩

C.完全强直收缩

D.等张收缩

E.不完全强直收缩
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问答题

Exactly where we will stand in the long war against disease by the year 2050 is impossible to say. (46) But if developments in research maintain their current pace, it seems likely that a combination of improved attention to dietary and environmental factors, along with advances in gene therapy and protein targeted drugs, will have virtually eliminated most major classes of disease.
From an economic standpoint, the best news may be that these accomplishments .could be accompanied by a drop in health-care costs. (47) Costs may even fall as diseases ’are brought under control using pinpointed, short-term therapies now being developed. By 2050 there will be fewer hospitals, and surgical procedures will be largely restricted to the treatment of accidents and other forms of trauma. Spending on nonacute care, both in nursing facilities and in homes, will also fall sharply as more elderly people lead healthy lives until close to death.
One result of medicine’s success in controlling disease will be a dramatic increase in life expectancy. (48) The extent of that increase is a highly speculative matter, but it is worth noting that medical science has already helped to make the very old (currently defined as those over 85 years of age) the fastest growing segment of the population. Between 1960 and 1995, the U.S. population as a whole increased by about 45%, while the segment over 85 years of age grew by almost 300%. (49) There has been a similar explosion in the population of centenarians, with the result that survival to the age of 100 is no longer the newsworthy feat that it was only a few decades ago. U.S. Census Bureau projections already forecast dramatic increase in the number of centenarians in the next 50 years: 4 million in 2050, compared with 37, 000 in 1990.
(50) Although Census Bureau calculations project an increase in average life span of only eight years by the year 2050, some experts believe that the human life span should not begin to encounter any theoretical natural limits before 120. years. With continuing
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