许多软件成本分析表明，60%至80%的错误来源于编程错误。

质量为200kg的物体置于升降机内的台秤上，从静止开始上升，运动过程中台秤示数F与时间t的关系如图所示．求各段时间内升降机的加速度和整个过程中升机上升的高度（g取10m/s²）．

患者女性，58岁，因“颈肩部疼痛伴右上臂麻木”来诊。查体：患者颈肩部未见明显畸形，颈4～6棘突旁压痛（+），椎间孔挤压试验（±），臂丛神经牵拉试验：左（-），右（-），右上臂外侧感觉迟钝，右前臂、右手感觉正常。右肩肱二头肌肌腱处压痛阳性，垂臂试验阴性，右肩关节外展、后伸活动受限。

首选的治疗方法不包括（）

A.手法治疗

B.口服药物

C.手术治疗

D.外用膏药

E.局部外敷中药

F.局部物理治疗

Today we launch UNICEF’s annual flagship report: "The State of the World’s Children 2009", which this year focuses on maternal and newborn health. The report shows that more must be done to addressmaternal and newborn health to help save and improve the lives of millions of children and their families.[TONE]∥[TONE]
Every year, more than 500,000 women die as a result of pregnancy or childbirth complications. Around 70,000 of these deaths are among girls and young women 15 to 19. This is not only a tragic personal loss forthe family, but it also leaves a long-term impact on the health and well-being of children and the developmentof communities and countries. Around 99 per cent of maternal deaths take place in the developing worldwhere having a child remains among the most serious health risks for women. Twenty one per cent ofmaternal deaths take place in just three countries: the Democratic Republic of Congo, Ethiopia and Nigeria.[TONE]∥[TONE]
In Niger, the country with the highest lifetime risk of maternal mortality, 1 in 7 women will die fromcomplications related to pregnancy or giving birth. The comparable risk in the developed world is 1 in 8,000.Since 1990, complications related to pregnancy and childbirth have taken the lives of an estimated 10 millionwomen. That is equal to around 20 per cent of the total population of South Africa. In addition, every year,some 4 million newborns die within the first 28 days of life from largely preventable causes. That is about40 per cent of all under-five deaths every year. The burden is disproportionately heavy in Africa and Asia.Ninety five per cent of maternal deaths occur in Africa and Asia combined and 90 per cent of newborn deathsoccur in Africa and Asia. [TONE]∥[TONE]
The good news is that between 1995 and 2005 skilled birth attendant coverage increased from 54 percent to 62 per cent in the developing world. During the same period ante-natal care rose from 60 percent to75 per cent. Yet around 50 million births in the developing world or about 40 per cent of all births remainwithout skilled health personnel. [TONE]∥[TONE]

And girls must go to school. Women who are educated are more likely to be healthy and to give birth to healthy babies who will survive and grow into adulthood. Educating girls and young women is one ofthe most powerful ways of breaking a vicious cycle of poverty and creating a Supportive environment formaternal and newborn health. [TONE]∥[TONE] At the household level, awareness needs to be increased about the importance of recognizing danger signs and ensuring that care for the woman or infant is sought right away. Changes must also be made at thecommunity level to address issues such as infrastructure and financial resources to ensure access to healthcare. And finally, health workers must be available, trained, and have the appropriate equipment. [TONE]//[TONE]
Progress has been made in reducing child mortality but much more must be done especially inaddressing maternal and newborn health. The world must approach this task with a shared sense ofurgency and a collaborative response. Results will be measured in lives saved and lives improved. Thankyou. [TONE]∥[TONE]

麻醉剂的发现和使用，是人类历史上了不起的一项成就，它可使患者在接受治疗时感觉不到疼痛．

（1）“笑气”(N₂O)是人类最早应用于医疗的麻醉剂之一．有关理论认为N₂O与CO₂具有相似的结构(包括电子式)；已知N₂O分子中氧原子只与一个氮原子相连，则N₂O的电子式可表示为________，其空间构型是________型，由此可见它是________分子(填“极性”或“非极性”)

（2）另一种常用麻醉剂氯仿，常因保存不慎而被氧化，产生剧毒物光气(COCl₂)∶2CHCl₃＋O₂→2HCl＋2COCl₂，为防止中毒事故，使用前可用于检验氯仿是否变质的试剂是________．

A．酚酞试液

B．淀粉碘化钾溶液

C．NaOH溶液

D．硝酸银稀溶液（3）作为麻醉剂，氙气在医学上备受重视．氙能溶于细胞质的油脂里，引起细胞的麻醉和膨胀，从而使神经末梢作用暂时停止．人们曾试用体积分数为80%氙气和20%氧气组成的混合气体，作为无副作用的麻醉剂．稀有气体氙的化学性质不活泼，但它在一定条件下可与其它物质反应生成化合物．现取1mol氙气和3.5mol氟气于密闭容器中，在一定条件下使反应完毕，剩余有1.5mol氟气，同时有白色固体生成，此白色固体的化学式为________．

癫痫全面性发作持续状态的首选药物是

A．甘露醇

B．苯妥英钠

C．水合氯醛

D．地西泮

E．苯巴比妥