问题
单项选择题
女性，16岁，诊断为侵袭性牙周炎，x线片：双侧下第一磨牙近远中牙槽骨垂直吸收根长的1/2，下列哪一项体征最不可能出现
A．牙齿松动I°—II°
B．牙龈退缩
C．牙龈呈实质性增生
D．咬合创伤
E．根分叉病变
答案
参考答案：C
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女性，16岁，诊断为侵袭性牙周炎，x线片：双侧下第一磨牙近远中牙槽骨垂直吸收根长的1/2，下列哪一项体征最不可能出现
A．牙齿松动I°—II°
B．牙龈退缩
C．牙龈呈实质性增生
D．咬合创伤
E．根分叉病变
参考答案：C
| 综合填空。 | |
chemical plant 2 terrible gas. It's called 3 pollution. It makes people 4 . It causes 5 problems and even cancer. Farmers use fertilizer too much, so 6 pollution is difficult to be stopped. Every year people pour a lot of waste into rivers, lakes 7 . So 8 pollution is widely spread. Light pollution is 9 to our eyes. What's more, 10 pollution influences the look of our cities. 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. |