题目:
下列哪项是阵发性睡眠性血红蛋白尿特异性的诊断依据()
A.红细胞寿命缩短
B.Coombs试验(+)
C.HbE(+)
D.Ham试验(+)
E.网织红细胞增高
答案:
参考答案:D
解析:酸溶血(Ham)试验是指患者红细胞与含5%盐酸的正常同型血清混合,pH6.4,37℃孵育2小时,溶血明显。本试验阳性对阵发性睡眠性血红蛋白尿(PNH)特异性高,敏感性略差,是诊断的重要依据。
下列哪项是阵发性睡眠性血红蛋白尿特异性的诊断依据()
A.红细胞寿命缩短
B.Coombs试验(+)
C.HbE(+)
D.Ham试验(+)
E.网织红细胞增高
参考答案:D
解析:酸溶血(Ham)试验是指患者红细胞与含5%盐酸的正常同型血清混合,pH6.4,37℃孵育2小时,溶血明显。本试验阳性对阵发性睡眠性血红蛋白尿(PNH)特异性高,敏感性略差,是诊断的重要依据。
阿拉伯半岛沙漠广布,而长江中下游的平原是“鱼米之乡”,主要原因:[ ]
A、纬度位置
B、季风气候
C、距海的远近不同
D、台风的影响
When I was thirteen, my family moved from Boston to Tucson, Arizona. 36 the move, my father 37 us in the living-room on a freezing January night. My sisters and I sat around the fire, not 38 that the universe would suddenly change its course. "In May, we're 39 to Arizona."
The words, so small, didn't seem 40 enough to hold my new life. But the world changed and I awoke on a train moving across the country. I watched the 41_ change from green trees to flat dusty plains to high mountains as I saw strange new plants that 42 mysteries(奥秘) yet to come. Finally, we arrived and 43 into our new home.
44 my older sisters were sad at the loss of friends, I 45 explored(探索) our new surroundings.
One afternoon, I was out exploring 46 and saw a new kind of cactus(仙人掌). I crouched (蹲) down for a closer look. "You'd better not 47 that."
I turned around to see an old woman
"Are you new to this neighborhood?" I explained that I was, 48 , new to the entire state.
"My name is Ina Thorne. Have you got used to life in the 49 ? It must be quite a _50 after living in Boston."
How could I explain how I 51 the desert? I couldn't seem to find the right words.
"It's vastness," she offered. “That vastness 52 you stand on the mountains overlooking the desert -- you can 53 how little you are in comparison with the world. 54 , you feel that the possibilities are limitless.”
That was it. That was the feeling I'd had ever since I'd first seen the mountains of my new home. Again, my 55 would change with just a few simple words.
"Would you like to come to my home tomorrow? Someone should teach you which plant you should and shouldn't touch."
36. A. During B. Until C. Upon D. Before
37. A. gathered B. warned C. organized D. comforted
38. A. hoping B. admitting C. realizing D. believing
39. A. going B. moving C. driving D. flying
40. A. good B. simple C. big D. proper
41. A. picture B. ground C. scene D. area
42. A. suggested B. solved C. discovered D. explained
43. A. settled B. walked C. hurried D. stepped
44. A. If B. After C. Once D. While
45. A. bitterly B. easily C. proudly D. eagerly
46 A as well B. as usual C. right away D. on time
47. A. move B. dig C. pull D. touch
48. A. of course B. in fact C. after all D. at least
49. A. desert B. city C. state D. country
50. A. luck B. doubt C. shock D. danger
51. A. found B. examined C. watched D. reached
52. A. why B. when C. how D. where
53. A. prove B. guess C. sense D. expect
54. A. However B. Otherwise C. Therefore D. Meanwhile
55. A. idea B. life C. home D. family
银行分析借款人品德的实质是()。
A.评估借款人的职业与收入
B.评估借款人的财产
C.评估借款人的债务
D. 评估借款人的还款意愿
心脏疾病的胸痛特点是
A.疼痛常在胸廓的下部或前部,在胸廓活动明显时加重
B.疼痛常在肋缘或;斜方肌处.有放射痛
C.胸痛常在心前区或胸骨后方,可放射到左肩或腹部
D.疼痛常固定于病变局部且常有压痛
E.胸痛多位于下胸部
2013年8月18日下午,日本鹿儿岛县樱岛的昭和火山口发生爆炸性喷发,喷出的烟尘高达5000米,为观测史上最高的一次。大量火山灰直冲云霄。图甲为“地壳物质循环示意图”,图乙为“大气受热过程示意图”。读图完成下列各题。
与昭和火山喷发形成的岩石类型一致的是图甲中的()
A.甲
B.乙
C.丙
D.丁