问题 单项选择题

干槽症的特征性表现是()

A.开口受限

B.冷热痛

C.术后1~3天放射性疼痛

D.术后3~5天肿痛未开始消退

E.拔牙创内无血凝块

答案

参考答案:E

解析:本题是临床知识题,考核"干槽症特征"。干槽症的特点是拔牙后2~3天才出现持续性疼痛,拔牙窝内空虚、骨面暴露、牙槽壁触痛、对冷热敏感,有时拔牙窝内有腐败变性血块,但非正常血凝块。选择C(术后1~3天放射性疼痛),是和拔牙后疼痛相混淆。拔牙后即出现放射性疼痛与拔牙创伤大或同侧牙存在牙髓炎有关。

阅读理解

阅读理解。

     In most schools, all students must wear school uniforms when they are at school. But not every student

likes the school uniform.

     Li Jia, a 13-year-old girl from No.9 Middle School, said, "I don't like my school uniform at all. It is too

ugly. I think young girls should wear some colorful clothes. But, I have to wear it every day."

    However, Su Yang, also a middle school student, has different opinions. He said, "I like my school uniform.

It is very beautiful. It is a symbol (象征) of my school and I like my school very much."

     Mr. Chen, a teacher, told the reporter, "It's good for the students to wear uniforms. It saves a lot of time

and money. In the past, my daughter spent much time on her clothes. But now, she seldom (很少) asks me

to buy clothes for her because she has to wear the school uniform."

     Do you like your school uniform? Welcome to write to us.

1. Most middle school students must wear the school uniform because ________.

A. their parents ask them to do so

B. the uniforms are beautiful

C. they don't have money to buy other clothes

D. it's the school rule

2. What do you know about Li Jia?

A. She doesn't like the uniform because it is expensive.

B. She is an ugly girl.

C. She doesn't like her school uniform at all.

D. She never wears her uniform.

3. What does Su Yang think of his school uniform?

A. He thinks it is very beautiful.

B. He thinks it is very ugly.

C. He doesn't like it.

D. He likes a symbol.

4. The word "opinion" probably means ________ in Chinese.

A. 校服

B. 看法

C. 情况

D. 成绩

5. From the passage, we know that ________.

A. most students like their uniforms

B. most students don't like their uniforms

C. different people have different opinions about their uniforms

D. uniforms are very popular in China

单项选择题