问题
单项选择题 A1/A2型题
良好的全冠轴面形态有利于保护（）
A.基牙的牙周膜
B.基牙的牙龈
C.基牙的牙槽骨
D.基牙不破折
E.全冠不破折
答案
参考答案：B
解析：正常牙冠轴面突度可以维持牙颈部龈组织的张力；保证食物正常排溢道及食物流对牙龈的生理刺激作用。
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良好的全冠轴面形态有利于保护（）
A.基牙的牙周膜
B.基牙的牙龈
C.基牙的牙槽骨
D.基牙不破折
E.全冠不破折
参考答案：B
解析：正常牙冠轴面突度可以维持牙颈部龈组织的张力；保证食物正常排溢道及食物流对牙龈的生理刺激作用。
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| My parents took me to England when I was a boy. I lived there for 3 years. When I came back, I could speak English quite well. "I must do something 1 with my English." I said to myself. Not long after that, I got a good 2 . Because of serious illness, I stayed home with nothing to do. My father brought me an English book. "Why don't you 3 into Chinese? It could make you English much better." I 4 to translate 1,500 words each day. But later I found it very 5 to keep the promise. One day, I wanted to go out because the weather was sunny. But those 1,500 words hadn't been translated yet. 6 wished I could just go outside and play football with my friends! I just wanted to 7 . I really couldn't control(控制) myself. I rushed out of the door. 8 the way to the playground, I didn't feel so happy that I could not enjoy myself. Suddenly I remembered the words my parents had told me, "Whatever you do, don't stop halfway." So I turned back and 9 with the translation. | ||||
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