问题 单项选择题 B型题

上下颌前突的病例,通过口外力牵引装置与何种牵引共用使用,能使上下颌前牙最大程度地向舌侧移动,以使前突的侧貌得到很好的改善,这种牵引是()

A.Ⅱ类颌间牵引

B.Ⅲ类颌间牵引

C.颌间垂直牵引

D.颌内牵引

E.颌外牵引

答案

参考答案:B

完形填空

完形填空(共10小题,每小题1.5分,满分15分)

阅读下面短文,掌握其大意,然后从A,B,C,D四个选项中,选出最佳选项。

Tom was crossing the road the other day  36  he saw a red car coming in the distance. He thought the car would  37 , as the lights had turned red.  38 , the car was going too  39  and Tom soon realized that it couldn’t stop in time. He  40  to move out of its way but it was too late. Tom was knocked  41  by the red car and lay almost dead on the road. Passers-by quickly went to him and an ambulance was sent for. The driver of the red car did not stop,  42  one of the men had written down the  43  of the car, which he gave to the police who arrived at the site(现场).

At the same time, Tom was taken to the  44  and his parents were called for. They were very surprised to hear of the accident and quickly rushed to his side. For three days Tom was not able to feel or think and his parents were worried that he might die. But on the fourth day Tom  45  and spoke softly. His parents were glad. The police by then had followed the owner of the car and caught hold of him at last.

36. A. when          B. while            C. since           D. before

37. A. start           B. stop             C. move           D. break

38. A. Unfortunately   B. Obviously        C. Besides         D. However

39. A. fast           B. slow             C. far             D. late

40. A. tried          B. managed          C. failed           D. was able

41. A. at           B. down             C. on             D. for

42. A. but           B. and              C. or              D. so

43. A. type          B. name             C. number         D. address

44. A. station       B. school            C. hospital         D. home

45. A. felt sick       B. got up            C. fell asleep       D. woke up

单项选择题