牙周炎造成牙齿松动的最主要原因是（）。 A.女性激素水平变化

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问题单项选择题

牙周炎造成牙齿松动的最主要原因是（）。

A.女性激素水平变化

B.牙槽骨吸收

C.创伤

D.急性炎症

E.牙周手术后

答案

参考答案：B

解析：由于牙槽骨的吸收，使牙齿的支持组织不足，造成牙齿松动，根面暴露。

阅读理解

根据短文内容，判断下列陈述正误。正确用√，错误用×。

Ann's bedroom is not very small. It's big. A TV set (一台) is in the room.It is on the table. There are

some red flowers on it, too. We can see a picture of trees on the wall. There is a blouse, a skirt and a light

green coat on the bed. Her shoes are under the bed. A desk is near the winder. On the desk is a clock. It'

7:00 o'clock. It 's time to go to school. But where is Ann's schoolbag? Oh, it's on the chair. Now Ann is

putting on her shoes.

( )1. We can see a dress, a coat and a sweater on the bed.

( )2. Ann's shoes are behind the door.

( )3. There is a TV set in the big bedroom.

( )4. Ann goes to school at 7:15.

( )5. One clock is on the desk and one picture of trees is on the wall.

材料分析题

填表：违法行为的类别及相应的法律责任。