问题
单项选择题
患儿，男，8岁，两天前意外致上中切牙碰伤，现有咬物痛。查：Ⅱ牙冠完整，牙龈无红肿，叩(-)，电测无活力，工度松动，扪(-)，X线片示根折线在根尖1/3处。处理应是（）
A．调
、固定、观察
B．根管治疗
C．患牙拔除
D．牙髓摘除
E．活髓切断
答案
参考答案：A
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患儿，男，8岁，两天前意外致上中切牙碰伤，现有咬物痛。查：Ⅱ牙冠完整，牙龈无红肿，叩(-)，电测无活力，工度松动，扪(-)，X线片示根折线在根尖1/3处。处理应是（）
A．调、固定、观察
B．根管治疗
C．患牙拔除
D．牙髓摘除
E．活髓切断
参考答案：A
| 选择正确的句子完成对话。 | |
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| Rose: Hi! Jim. 1 Jim: It's great! I have been to the countryside for a vacation. Rose: Really? 2 Jim: I think it is so wonderful. The air is fresh and it is so quiet. What a good place to live in Rose: 3 Jim: I don't agree with you. In the city, the air pollution and traffic problem make you sick. Rose: I disagree with you. You will be open minded if you live in the city because the information comes quickly, while 4 Jim: I don't think so. |