单选题支气管哮喘治疗最有效的方法是
单选题下列类风湿关节炎的关节X线检查的结果属Ⅱ期的特点是
单选题下列关于缺铁性贫血描述不正确的是
单选题男性，34岁，1月来感乏力，伴双下肢瘀点。化验血Hb57g/L，WBC2．9×10
9
/L，Plt4．8×10
6
/L，骨髓穿刺检查示：增生明显活跃，原始细胞≥30％，糖原染色（+），Auer小体（一）。
单选题下列选项中关于室性早搏不正确的是
单选题A．肥厚性心肌病B．冠心病C．心房颤动D．急性高血压
单选题男性，24岁，高热3天，咳嗽，咳铁锈色痰，血白细胞增高，胸片呈右上叶片状阴影，正确选用抗生素为A．青霉素B．青霉素+链霉素C．青霉素+庆大霉素D．先锋VE．先锋V+阿米卡星
单选题A．氨基甲酸血红蛋白B．碳酸氢根C．二二者均有D．二者均无 (2002年)
单选题关于二尖瓣狭窄伴主动脉瓣关闭不全，下列哪项不正确A．是风湿性心脏病的常见组合形式B．由于二尖瓣狭窄致心排血量减少，使左心室扩大延缓C．约2/3患严重二尖瓣狭窄的病人可伴有不同程度的主动脉瓣关闭不全D．心排血量增加可使外周血管征缺如E．心尖部第一心音可不亢进
单选题Our ape-men forefathers had no obvious natural weapons in the struggle for (1) in the open. They had neither the powerful teeth nor the strong claws of the big cats. They could not (2) with the bear, whose strength, speed and claws (3) an impressive " small fire" weaponry. They could not even defend themselves (4) running swiftly like the horses, zebras or small animals. If the ape-men had attempted to compete on those terms in the open, they would have been (5) to failure and extinction. But they were (6) with enormous concealed advantages of a kind not possessed by any of their competitors. In the search (7) the pickings of the forest, the ape-men had (8) efficient stereoscopic vision and a sense of color that the animals of the grasslands did not (9) . The ability to see clearly at close range permitted the ape-men to study practical problems in a way that lay far (10) the reach of the original inhabitants of the grassland. Good long-distance sight was (11) another matter. Lack of long-distance vision had not been a problem for forest-dwelling apes and monkeys because the (12) the viewpoint, the greater the range of sight-so (13) they had had to do was climb a tree. Out in the open, however, this simple solution was not (14) . Climbing a hill would have helped, but in many places the ground was flat. The ape-men (15) the only possible solution. They reared up as high as possible on their hind limbs and began to walk (16) . This vital change of physical position brought about considerable disadvantages. It was extremely unstable and it meant that the already slow ape-men became (17) still. (18) , they persevered and their bone structure gradually became (19) to the new, unstable position that (20) them the name Homo erectus, upright man.
单选题A．成年人多见B．好发于婴幼儿，青少年C．无年龄限制D．好发于老年人
单选题CO
2
在血液中运输的主要形式是(1990，2004)
单选题可导致氧解离曲线左移的因素是
单选题COPD病理生理改变的标志是A．气体交换异常B．黏液高分泌C．肺动脉高压D．肺过度充气E．呼气气流受限
单选题A．抗Sm抗体B．抗dsDNA抗体C．抗核抗体ANAD．抗drDNA抗体
单选题浆液性炎常见于下列哪种疾病?
单选题下列有关高血压脑病变的描述中，哪项是错误的( )(1996年)
单选题Many foreigners who have not visited Britain call all the inhabitants English, for they are used to thinking of the British Isles as England. (1) , the British Isles contain a variety of peoples, and only the people of England call themselves English. The others (2) to themselves as Welsh, Scottish, or Irish, (3) the case may be; they are often slightly annoyed (4) being classified as "English".Even in England there are many (5) in regional character and speech. The chief (6) is between southern England and northern England. South of a (7) going from Bristol to London, people speak the type of English usually learnt by foreign students, (8) there are local variations. Further north, regional speech is usually" (9) "than that of southern Britain. Northerners are (10) to claim that they work harder than Southerners, and are more (11) They are openhearted and hospitable; foreigners often find that they make friends with them (12) . Northerners generally have hearty (13) : the visitor to Lancashire or Yorkshire, for instance, may look forward to receiving generous (14) at meal times. In accent and character the people of the Midlands (15) a gradual change from the southern to the northern type of Englishman. In Scotland the sound (16) by the letter "R" is generally a strong sound, and "R" is often pronounced in words in which it would be (17) in southern English. The Scots are said to be a serious, cautious, thrifty people, (18) inventive and somewhat mystical. All the Celtic peoples of Britain (the Welsh, the Irish, the Scots) are frequently (19) as being more "fiery" than the English. They are (20) a race that is quite distinct from the English.
单选题下述病变中，与大肠癌关系不密切的是A．家族性腺瘤性息肉病B．绒毛状腺瘤C．管状腺瘤D．溃疡性结肠炎E．增生性息肉
单选题A．急性细菌性痢疾B．肠伤寒C．急性蜂窝织炎D．急性重症肝炎 (2011年)