问题 单项选择题

关于假膜性结肠炎的描述正确的是()

A.假膜脱落后常引起溃疡和肠穿孔

B.与服用广谱抗生素无关

C.主要见于青壮年

D.假膜由黏液、纤维素和中性粒细胞构成

E.假膜不易脱落

答案

参考答案:D

解析:假膜性结肠炎由梭状芽孢杆菌产生的毒素引起,常与服用广谱抗生素有关。多发生于儿童或年老体弱者。肉眼表现为不连续的黏膜黄白色斑块,脱落后形成溃疡。镜下假膜由黏液、纤维素和中性粒细胞构成。假膜下的黏膜腺体可扩张,固有层充血、水肿及炎细胞浸润。

单项选择题
完形填空

第二节 完形填空(共20小题;每小题1.5分,满分30分)

阅读下面短文,掌握其大意,然后从41-60各题所给的A、B、C、D四个选项中,选出最佳选项

Football is, I suppose, the most popular game in England; one has only to go to one of the important matches to see. Rich and poor, young and old, one can see   37_  there, shouting or cheering for one side or  _38 _.

One of the most   39 _ things about football in England to a   40_  is the great   41   of the game which even the smallest boy seems to _ 42 _. He can tell you the names of the players in   43   of the important teams. He has   44   of them and knows the results of many matches. He   45   tell you proudly who he expects will   46   a game, and his opinion is   47   right.

Most schools in England _ 48 _ football seriously--   49   seriously than all the others   50   lessons are the most important. In England, it is   51   that education is not only an activity of filling a boy's _ 52 _ with facts in a classroom, education also   53   character training; and one of the best ways to do this is to play   54   games. The school   55   arranges games and matches for its pupils. Football is a good game for the body,   56   and a quick brain. As a result, it is the school's favourite game in winter.

37. A. all them                 B. them of all      C. all of whom      D. them all 

38. A. another              B. other                 C. the other           D. two

39. A. surprising           B. exciting             C. moving          D. puzzling

40. A. neighbour           B. stranger             C. native         D. relative

41. A. consideration       B. invention        C. knowledge         D. decision    

42. A. belong to            B. grasp             C. hold               D. have

43. A. more                  B. most                 C. few                   D. mostly

44. A. faces                  B. papers              C. photos              D. records

45. A. will                    B. may                  C. should         D. must

46. A. have                   B. win                   C. defeat         D. beat

47. A. ever               B. seldom             C. usually             D. once

48. A. regard             B. see                    C. worry             D. take

49. A. much more         B. much             C. very                  D. very much 

50. A. which                 B. where             C. that                   D. as

51. A. guessed           B. decided             C. believed            D. made

52. A. mind                  B. head                 C. brain.                  D. thought

53. A. means                 B. takes                 C. appears             D. proves

54. A. team                   B. personal            C. single            D. serious

55. A. still              B. therefore      C. somehow     D. never

56. A. feet                    B. running             C. skill                  D. sight