问题
单项选择题 案例分析题
男，45岁。右下6缺失，要求行固定义齿修复。检查见缺牙间隙可，牙槽嵴正常，咬合正常，右下7近中
面中龋，牙髓活力正常，无牙周疾患；右下5松动Ⅰ度，X线显示牙槽骨吸收达根长1/3。
右下7应采用的固位体是（）.
A.全冠
B.3/4冠
C.嵌体
D.高嵌体
E.桩核冠
答案
参考答案：A
搜题请搜索小程序“爱下问搜题”
男，45岁。右下6缺失，要求行固定义齿修复。检查见缺牙间隙可，牙槽嵴正常，咬合正常，右下7近中面中龋，牙髓活力正常，无牙周疾患；右下5松动Ⅰ度，X线显示牙槽骨吸收达根长1/3。
右下7应采用的固位体是（）.
A.全冠
B.3/4冠
C.嵌体
D.高嵌体
E.桩核冠
参考答案：A
| 从下面方框中选择适当的选项填入短文中，使短文通顺、完整。选项中有两个选项是多余选项。 | |
Some oranges do not have any seeds. Some have a 2._____ skin (果皮), and some have a thin skin. The orange tree is beautiful. It has a lot of shiny green 3.______. The small white flowers smell very sweet. An orange tree has 4.______ and fruit at the same time. There were orange trees twenty million years ago. The oranges were very small, not like the 5.______ today. The orange trees probably came from China. Many different kinds of wild oranges 6.______ in China today. The Chinese started to raise orange trees about 4,400 years ago. Farmers in other parts of Asia and the Middle East 7.______ to raise oranges from the Chinese. 8.______ they taught Europeans. The Spanish planted orange trees in the New World (North and South America). They 9.______ them to Florida first. Oranges are a very important crop to Florida today. In English, orange 10.______ both a fruit and a color. We use the name of the fruit for the color. |