女,28岁,活动后心悸,气促4年,偶感心前区疼痛。查体:血压140/40mmHg,心界向左下扩大,胸骨左缘第3肋间闻及舒张期叹气样杂音。最可能的诊断为
A. 心肌炎
B. 动脉导管未闭
C. 肥厚型梗阻性心肌病
D. 冠心病心绞痛
E. 风心病,主动脉瓣关闭不全
男性,25岁,发热,牙龈出血,皮肤瘀点、瘀斑5天,胸骨压痛明显,肝脾不大。HGB70g/L,WBC50×109/L,PLT20×109/L,骨髓增生极度活跃,原始细胞0.9,考虑为急性淋巴细胞白血病,符合其特点的是
A. 过氧化物酶阳性
B. 可见Auer小体
C. 非特异酯酶阳性
D. 苏丹黑染色阴性
E. 糖原。PAS反应()或成块
女性,40岁,类风湿关节炎10年,长期服用非甾体抗炎药,化验血常规血红蛋白78g/L,下列关于该患者贫血说法错误的是
A. 属于慢性病性贫血
B. 常伴有血小板减少
C. 是小细胞低色素性贫血
D. 主要发生机制是铁利用障碍
E. 可能有缺铁因素参与
By citing the toothpaste is out of the tube, the author intends to mean that______.
A. a younger generation of unskilled immigrants has been produced and their number will grow
B. the unskilled immigrants have dragged down the wages of the natives and will continue to do so
C. the children of unskilled immigrants have done poorly in school and will likely to drop out soon
D. the unskilled immigrants have already been here and will certainly not return