单选题检查胸廓扩张度于胸廓前下部较易获得，这是因为
单选题缺铁性贫血红细胞直方图的特点是
单选题脊柱器质性侧凸的特点是
单选题粒细胞缺乏症是指中性粒细胞绝对值
单选题A．头痛伴剧烈(或喷射性)呕吐B．头痛伴眩晕C．头痛伴视力障碍D．头痛伴癫痫发作E．头痛伴神经功能紊乱症状
单选题关于主动脉瓣狭窄心脏听诊的特点，不正确的是
单选题关于S-T段，下述哪种说法是错误的
单选题急性脑膜炎患者，体格检查时最重要的体征是
单选题A．心电轴左偏 B．心电轴右偏C．心电轴不偏 D．顺钟向转位E．逆钟向转位
单选题心电图上R－R间期绝对规则，频率200次／分，QRS波群时限为0．08秒，最可能的诊断是
单选题关于心脏叩诊的叙述，下列哪项是错误的
单选题A．心悸伴心前区痛B．心悸伴发热C．心悸伴贫血D．心悸伴呼吸困难E．心悸伴消瘦、出汗
单选题嗜酸粒细胞不增多的疾病是
单选题支气管扩张患者咯血的性质是
单选题A．造血干细胞复制和分化异常B．DNA合成障碍C．血红蛋白合成障碍D．红细胞破坏过多E．血液丢失
单选题由Einthoven创设的V2导联电极应放在
单选题A．肾上腺皮质功能减退B．Cullen征C．多发性神经纤维瘤D．血色病E．Grey-Turner征
单选题患者，女，34岁。剧烈咳嗽后突然呼吸困难、发绀。体检：右胸呈鼓音，呼吸音消失。最可能的诊断为
单选题正常AG代谢性酸中毒见于
单选题Although there are many skillful Braille readers, thousands of other blind people find it difficult to learn that system. They are thereby shut (1) from the world of books and newspapers, having to (2) on friends to read aloud to them. A young scientist named Raymond Kurzweil has now designed a computer which is a major (3) in providing aid to the (4) .His machine, Cyclops, has a camera that (5) any page, interprets the print into sounds, and then delivers them orally in a robot-like (6) through a speaker. By pressing the appropriate buttons (7) Cyclops's keyboard, a blind person can "read" any (8) document in the English language. This remarkable invention represents a tremendous (9) forward in the education of the handicapped. At present, Cyclops costs $ 50,000. (10) , Mr. Kurzweil and his associates are preparing a smaller (11) improved version that will sell (12) less than half that price. Within a few years, Kurzweil (13) the price range will be low enough for every school and library to (14) one. Michael Hingson, Director of the National Federation for the Blind, hopes that (15) will be able to buy home (16) of Cyclops for the price of a good television set. Mr. Hingson's organization purchased five machines and is now testing them in Maryland, Colorado, Iowa, California, and New York. Blind people have been (17) in those tests, making lots of (18) suggestions to the engineers who helped to produce Cyclops. "This is the first time that blind people have ever done individual studies (19) a product was put on the market," Hingson said. "Most manufacturers believed that having the blind help the blind was like telling disabled people to teach other disabled people. In that (20) , the manufacturers have been the blind ones. /