未知题型 通过查表求下列上侧分位点： ①u0.005，u0.999，u0.75； ②χ0.0252(6)，χ0.952(20)，χ0.0252(50)； ③t0.975(15)，t0.01(7)，t0.95(250)； ④F0.05(12，6)，F0.025(8，20)，F0.90(5，12)．

未知题型 （题干）女性，36岁，患哮喘20年，近2年经常夜间感口苦，烧心。体检：气管居中，双肺叩诊过清音，双肺可闻及干啰音。腹部检查未见异常。氧饱和度68% 患者近期出现症状的原因可能为请帮忙给出每个问题的正确答案和分析，谢谢！

单项选择题 根据下列文章,请回答 36～40 题。 Sleep Necessary for Memories Burning the midnight oil before an exam or interview does harm to the performance according to a recent research which found that sleep is necessary for memories to be taken back into the brain．A good night’s sleep within 30 hours of trying to remember a new task is a required condition of having good recall in the weeks ahead，scientists have found．The research，published in the December issue of Nature Neuroscience，showed that it was the act of sleep，rather than the simple passage of time，that was critical for long—term memory formation．“We think that getting that first night’s sleep starts the process of memory consolidation(巩固)，”said Robert Stick gold，a sleep researcher at Harvard Medical School who conducted the．1atest study．“It seems that memories normally wash out of the brain unless some process nails them down．My suspicion is that sleep is one of those things that does the nailing down，”Professor Stick gold said．With about one in five people claiming that they are SO chronically short of sleep that it affects their daily activities。the latest work emphasizes the less well-understood side effect—serious memory impairment(损害)．Volunteers in an experiment found it easier to remember a memory task if they were allowed to sleep that night．But for those kept awake, no amount of subsequent sleep made up for the initial loss．Professor Stick gold’s team trained 24 people to identify the direction of three diagonal(斜线形的)bars flashed for a sixtieth of a second on a computer screen full of horizontal(水平的)stapes．Half of the subjects were kept awake that night，while the others slept．Both groups were allowed to sleep for the second and third nights to make up for any differences in tiredness between the volunteers．Those who slept the first night were significantly and consistently battler at remembering the task while the second group showed no improvement despite enjoying two nights of catch—up sleep． 第 36 题 The research published in Nature Neuroscience showed that what was essential to the formation of long-term memory wasA．intelligence．B．timeC．foodD．sleep