题目内容

患者,女,67岁,牙列缺失6年,曾作全口义齿修复。口腔检查:牙槽嵴较低平,黏膜无异常发现,上、下颌位置关系正常。为该患者重新制作全口义齿时 义齿磨光面与唇颊和舌的接触部应有合适表面形态,这主要为了

A. 增加面部丰满度
B. 避免咬颊咬舌
C. 使发音清晰
D. 帮助义齿固位和稳定
E. 提高咀嚼功能

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患者,女,67岁,牙列缺失6年,曾作全口义齿修复。口腔检查:牙槽嵴较低平,黏膜无异常发现,上、下颌位置关系正常。为该患者重新制作全口义齿时 全口义齿基托牙龈外形的形状要求应该是

A. 蜡包埋人工牙冠颈1/3
B. 基托牙龈外形与人工牙面成20°角
C. 基托牙龈外形与牙面成45°角,其外形与天然牙根有相似的突度和长度
D. 基托牙龈外形与人工牙面成60°角
E. 基托牙龈外形的长度和突度要比天然牙根长且突出

Questions 11 to 18 are based on the conversation you have just heard.

A. Go to the library.
B. Get some exercise.
C. Go to see a film.
Do schoolwork at home.

For centuries people have been fighting over whether governments should allow trade between countries. There have been, and probably always will be, (1) to the argument. Some people argue that just (2) is best for both the country and the world. Others argue that trade with other countries (3) for some people to make a good living. Both sides are at least (4) .International trade matters a lot. Its effects on (5) are enormous. Imagine a world in which your country (6) at all with other countries. Imagine what kind of job you would be (7) and what goods you could buy or not buy in such a world.For the United States, for example, start by imagining that it lived without its (8) a year in imported oil, and cut back on its (9) because the remaining domestic oil and other energy sources were (10) . Producers and consumers in other parts of the economy would (11) if they were suddenly stripped of foreign-made goods like CD players and clothing. On the (12) side, suppose that Boeing could sell airplanes, and farmers could sell their crops, (13) the United States, and that U. S. universities could admit only (14) . In each case there are people who gain and people who lose from (15) international trade. In any case, less or more international trade will have (16) on your career as well as your life.For years, American companies are often faced with the choice of buying (17) , which are expensive, and foreign-made goods, which are cheap. If the company buys American goods, it may (18) taxpayers by failing to keep prices low. But if it buys foreign goods, it may (19) the jobs of American workers. Recently, Congress has passed a law compelling American companies with government contracts to (20) domestic goods and services. 17()

For centuries people have been fighting over whether governments should allow trade between countries. There have been, and probably always will be, (1) to the argument. Some people argue that just (2) is best for both the country and the world. Others argue that trade with other countries (3) for some people to make a good living. Both sides are at least (4) .International trade matters a lot. Its effects on (5) are enormous. Imagine a world in which your country (6) at all with other countries. Imagine what kind of job you would be (7) and what goods you could buy or not buy in such a world.For the United States, for example, start by imagining that it lived without its (8) a year in imported oil, and cut back on its (9) because the remaining domestic oil and other energy sources were (10) . Producers and consumers in other parts of the economy would (11) if they were suddenly stripped of foreign-made goods like CD players and clothing. On the (12) side, suppose that Boeing could sell airplanes, and farmers could sell their crops, (13) the United States, and that U. S. universities could admit only (14) . In each case there are people who gain and people who lose from (15) international trade. In any case, less or more international trade will have (16) on your career as well as your life.For years, American companies are often faced with the choice of buying (17) , which are expensive, and foreign-made goods, which are cheap. If the company buys American goods, it may (18) taxpayers by failing to keep prices low. But if it buys foreign goods, it may (19) the jobs of American workers. Recently, Congress has passed a law compelling American companies with government contracts to (20) domestic goods and services. 18()

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