问题
单项选择题
一患者右上后牙于5天前结束金属烤瓷冠治疗，患者持续地对冷热刺激敏感，最可能的原因是()
A．戴冠时机械刺激
B．邻面接触紧密
C．游离磷酸的刺激
D．龋坏组织未去净
E．有咬合高点
答案
参考答案：C
解析： 戴冠时机械刺激一般于戴冠后较快消失，不会5天后仍存在。持续地对冷热刺激敏感最可能的原因是游离磷酸的刺激。
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一患者右上后牙于5天前结束金属烤瓷冠治疗，患者持续地对冷热刺激敏感，最可能的原因是()
A．戴冠时机械刺激
B．邻面接触紧密
C．游离磷酸的刺激
D．龋坏组织未去净
E．有咬合高点
参考答案：C
解析： 戴冠时机械刺激一般于戴冠后较快消失，不会5天后仍存在。持续地对冷热刺激敏感最可能的原因是游离磷酸的刺激。
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| When I was a little girl, I lived with my grandparents in a small village (村庄). The life there was 1 , and I liked it very much. I had many friends and I liked playing with them 2 . After rainy days, there was much 3 in the river (河) near our house. I often went there to get 4 with my friends. I had 5 fun living there. Now I live in a big city. I study in a school, but I 6 my life here. It's too busy and it often makes me very 7 . Now the most interesting thing for me is to go to my grandparents' home to 8 my vacation. Every time I can't 9 to go there. I 10 a quiet life. I hope to live in a village when I'm older. | |||
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