问题
单项选择题 A1/A2型题
不属于牙周组织防御机制的是（）
A.上皮附着的封闭作用
B.釉质牙骨质交界的三种形式
C.龈沟液
D.白细胞
E.上皮的快速更新和修复
答案
参考答案：B
解析：釉质牙骨质交界的三种形式并不直接参与牙周组织的防御功能。故答案为B。
搜题请搜索小程序“爱下问搜题”
不属于牙周组织防御机制的是（）
A.上皮附着的封闭作用
B.釉质牙骨质交界的三种形式
C.龈沟液
D.白细胞
E.上皮的快速更新和修复
参考答案：B
解析：釉质牙骨质交界的三种形式并不直接参与牙周组织的防御功能。故答案为B。
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| In the United States there was an unusual tale telling of the daughter of a mechanic (技工). One day while walking along the bank of a lake, the girl 1 to see 20 eggs laid by a wild goose. After some time the girl 2 the mother would't return to her eggs and she 3 to take them home. There she carefully 4 the eggs in the heat of a lamp. Several days 5 the eggs broke and the baby geese came into the 6 . Geese are known to take the first living thing they see as their mother. 7 ,to these young geese, the girl was their mother. As they 8 ,the girl was able to 9 her birds to run across the grass, but she could't teach them to 10 . the girl became increasingly worried about this, both when 11 and in her dreams. Later, she had an 12 :She would pilot a plane to guide them in 13 . She asked her father for a plane and she assembled (组装)a small aircraft for her. Caring about 14 safety, the father decided to pilot the plane himself. However, the birds did't 15 or follow him, and 16 slept in the grass. One day, the girl 17 into the plane, started it and soon left the 18 .Seeing their mother take to the air, the birds 19 flapped (拍打)their wings and 20 .she flew the plane freely in the sky, her young birds following. | ||||
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