| 牙周检查中探诊是最主要的手段，那么 |
通过探诊显示最有意义的指标是
A．牙周袋的深度
B．探及龈下牙石
C．袋内溢脓
D．附着水平
E．牙龈退缩
参考答案：D
解析：牙周探诊最有意义的指标是附着水平。牙周袋深度(指龈缘到底部的距离)虽重要，但不能反映牙周破坏的严重程度，只能供治疗前后的参考。而附着水平(指釉牙骨质界到袋底的距离)可反映牙周破坏的严重程度，因而更为重要。
| 阅读理解。 | ||
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| 1. Mr.Smith wants to go to Blue Water World with his family, so they can go there ? | ||
| A. at 5:00 p. m on Monday B. at 10:00 a. m on Tuesday C. at 2:00 p. m on Sunday D. at 11:00 a. m on Monday | ||
| 2. Mr. Liu wants to go to Blue Water World with his eight-year-old twin sons this Saturday | ||
| How much will they have to spend? | ||
| A.￥40 B.￥120 C.￥80 D.￥20 | ||
| 3. If you want to have a hot spring bath, you can call _____. | ||
| A. 555-5685 B. 555-5686 C. 555-5684 D. 555-5681 |
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