问题
单项选择题 案例分析题
患者，男，25岁，自觉左上前牙色暗不美观，要求改善，既往有前牙外伤史，未做特别处理。检查见左上中切牙无明显龋坏，唇面釉质横向隐裂纹，牙体色暗，叩诊不适，无明显冷测刺激痛，松（-），X线检查示
牙体及根尖周低密度影，根管内无阻射影。
该患者诊断为（）
A.慢性牙髓炎
B.四环素牙
C.牙周创伤
D.根尖周炎
E.隐裂
答案
参考答案：D
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患者，男，25岁，自觉左上前牙色暗不美观，要求改善，既往有前牙外伤史，未做特别处理。检查见左上中切牙无明显龋坏，唇面釉质横向隐裂纹，牙体色暗，叩诊不适，无明显冷测刺激痛，松（-），X线检查示牙体及根尖周低密度影，根管内无阻射影。
该患者诊断为（）
A.慢性牙髓炎
B.四环素牙
C.牙周创伤
D.根尖周炎
E.隐裂
参考答案：D
| 完形填空。 | |||
| A man found the cocoon (茧) of a moth (蛾). He took it home so that he could 1the moth come out of the cocoon. On that day a small 2 appeared. He sat and watched the moth for several hours as the moth struggled to 3 the body through that little hole. Soon it seemed to stop making any progress. It appeared as if it had 4 as far as it could and it could go no further. It just seemed to be stuck. So the man, out of his kindness, decided to help the moth. He took a pair of scissors and cut off the 5___ bit of the cocoon. The 6 then came out easily. But it had a swollen body and small, shriven (无用的) wings. The man continued to watch the moth because he expected that, at any moment, the wings would enlarge and 7 to be able to support the 8 , which would get smaller in time. Neither happened! In fact, the little moth spent the rest of its life 9 around with a swollen body and shriven wings. It was 10 able to fly. What the man in his kindness 11 was that the small cocoon and the 12__of the moth to get through the 13 opening was a way to push fluid (液体) 14 the body of moth 15 its wings so that it would be ready to fly 16 it got out of the cocoon. Freedom and 17 would come only after the struggle. By taking the struggle away, he also took away the moth's health. Sometimes struggles are exactly what we need in our lives. If we were to 18 our lives without any difficulties, we would become disabled. We would not be as 19 as what we could have been. Give every opportunity a chance. Leave no room for 20 . | |||
| ( )1. A. help ( )2. A. opening ( )3. A. push ( )4. A. got ( )5. A. covering ( )6. A. moth ( )7. A. lessen ( )8. A. standing ( )9. A. flying ( )10 A. already ( )11. A. shouldn't do ( )12. A. crawling ( )13. A. tiny ( )14. A. in ( )15. A. into ( )16. A. after ( )17. A. courage ( )18. A. stand on ( )19. A. great ( )20. A. regrets | B. protect B. line B. draw B. done B. remaining B. butterfly B. widen B. flight B. crawling B. certainly B. thought B. struggle B. beginning B. on B. to B. once B. hope B. get on B. determined B. death | C. watch C. moth C. make C. tried C. shell C. cocoon C. expand C. themselves C. walking C. never C. did C. fight C. right C. by C. in C. before C. flight C. go through C. brave C. failure | D. see D. butterfly D. force D. struggled D. skin D. worm D. shorten D. body D. lying D. seldom D. didn't understand D. force D. above D. from D. onto D. until D. survival D. live D. strong D. wishes |