问题
单项选择题 A1型题
对活髓牙牙体缺损修复治疗的首要原则是
A．恢复[*]面形态与咬合关系
B．保存与保护牙体牙髓组织
C．恢复解剖外形与功能
D．恢复轴面形态
E．恢复邻接关系
答案
参考答案：B
解析： 所有选项为牙体缺损的修复治疗原则，对于活髓牙，首要原则为保存与保护牙体牙髓组织。
搜题请搜索小程序“爱下问搜题”
对活髓牙牙体缺损修复治疗的首要原则是
A．恢复[*]面形态与咬合关系
B．保存与保护牙体牙髓组织
C．恢复解剖外形与功能
D．恢复轴面形态
E．恢复邻接关系
参考答案：B
解析： 所有选项为牙体缺损的修复治疗原则，对于活髓牙，首要原则为保存与保护牙体牙髓组织。
Chinese New Year Chinese New Year has been celebrated in China for thousands of years. It celebrated the first day of the first month on the Chinese calendar. It is also called the Spring Festival and is the most important of the traditional Chinese holidays. This day is celebrated by all of Chinese people in China as well as throughout the world.科 There are a number of traditions celebrated during Chinese New Year: Dragon Dance or lion Dance－In a dragon dance a large team of people(up to 50) carry portions(一部分) of the dragon on poles and move the poles in a manner that depicts(描述) the movement of the dragon. In a lion dance two people dress in an elaborate(复杂) lion costume and move and dance to mimic a lion. Red Envelops－Red envelops filled with money are often handed out as presents to young children or newly married couples. An even amount of money is given for good luck. Cleaning the house－Chinese families generally clean their house thoroughly before many celebrations in order to get rid of any of last year’s bad luck. Firecrackers(爆竹)－A traditional part of the celebration is to light a lot of fire crackers. The Ancient Chinese believed that the loud noise would scare off evil(邪恶的) spirits. In some places, like Hong Kong, lighting real firecrackers has been banned. As a result, many people decorate their homes with colorful plastic firecrackers. The color red－The color red is the main color for clothes and decorations. It symbolizes joy and happiness.
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