问题 单项选择题

男,55岁。缺失,近远中邻牙均向缺隙倾斜,设计固定义齿时应注意()

A.基牙的支持力

B.义齿的固位力

C.固定义齿类型

D.共同就位道

E.力的大小

答案

参考答案:D

解析:一般情况下,牙排列位置正常,顺着各桥基牙的长轴方向做牙体预备,即可获得共同就位道。对有轻度倾斜移位的牙,可适当消除倒凹,或稍微改变就位道方向,即可获得共同就位道,对于严重倾斜移位的牙,为了求得共同就位道,必须磨除过多的牙体组织,这样容易造成牙髓损伤,而且严重倾斜的牙,力不易沿着牙体长轴传导,牙周组织易受损伤。

完形填空

SECTION B

Directions ; For each blank in the following passage there are four words of phrases marked with A, B, C and D. Fill in each blank with a word that best fits the context.

This is a true story about something that happened between a customer of General Motors and its Customer - Care Executive (客服主管).The following complaint was received by General Motors. "•••It may sound crazy, but it's a fact that every time I buy a  36   ice cream, and come back from the store, my car won't start. If I get any other kind of ice cream, the car starts   37   fine, why?" The executive was    38    about the letter, but sent an engineer to check it out anyway.

The   39   made three visits to the store with the customer. The first time, he got chocolate ice cream. The car started. The second time, he ordered strawberry. The car started. The third time he got vanilla. The car failed to start. The engineer   40   to believe that the man's car was allergic (过敏的)to vanilla ice cream. He 41   his visits, and noted all sorts of data: the types of gas used and the time it took to drive back and forth.

Soon he came a clue: it took the man less   42   to buy vanilla than any other flavor (味道). Why? The answer was in the layout (布局)of the store. Vanilla, as the most   43   flavor, was in the front of the store for quick pickup. All the other flavors were kept further back, where it took longer to buy them.

Time was now the   44   not the vanilla ice cream! The engineer quickly put forward an answer: “engine trouble." The extra time taken to get any other flavor   45   the engine to cool down longer. When the man got vanilla, the engine was still too hot to start.

Even crazy 一 looking problems can be real. What really    46     is your attitude to the problem.

Don't just say something is "IMPOSSIBLE" without putting a sincere effort into    47    it out. If you look closer, you may discover that it's possible after all.

36.   A.    chocolate B. strawberry  C. vanilla       D. banana

37.   A.    just  B. only    C. still     D. ever

38.   A.    worried   B. crazy  C. doubtful     D. cheerful

39.   A.    customer B. engineer     C. executive    D. shopkeeper

40.   A.    pretended       B. decided      C. struggled    D. refused

41.   A.    stopped   B. continued   C. valued D. repeated

42.   A.    time B. effort  C. cost    D. speed

43.   A.    strange    B. familiar      C. terrible       D. popular

44.   A.    effect      B. reason C. problem     D. solution

45.   A.    prevented       B. encouraged C. let      D. allowed

46.   A.    matters    B. impresses   C. bothers -    D, concerns

47.   A.    looking   B. figuring     C, trying D. testing

填空题