问题 单项选择题

一患者突发右侧胸痛,并伴呼吸困难,来诊。查体:气管向左侧移位、右侧胸壁隆起,呼吸运动和触觉语颤减弱,叩诊呈鼓音,听诊呼吸音消失。疑为气胸。其X线表现应为().

A.圆形或卵圆形透光日,其内有细小的条纹理

B.右侧肺脏被压缩,并见到一线状线在被压缩肺的外缘

C.右肺下叶见一圆形透亮区,其内可见液平面

D.右肺可见一偏心空洞

E.无异常所见

答案

参考答案:B

阅读理解

阅读理解。

     Millions of young people are writing blogs. Millions of others are reading them. The word "blog" is a

short way of saying Web log.

     Many popular Web sites now offer free, easy ways to create personal Web pages and fill them with

writings and pictures. Web sites called "Facebook" and "MySpace" are some of the most popular blog sites

for young people. Many young adults use their blogs to write about daily activities and events in their lives.

They also provide a place for people to write their ideas and opinions and how they think of others' ideas.

     Blogs offer young people a place to show their writings and feelings. They can also be helpful to connect*

young people with others. But blogs can become dangerous when they are read on the Internet by millions of

people all over the world.

     Recent studies show that young people often provide their names, age and where they live on the Internet.

That may not be safe for them. This personal information puts them at risk* of being searched out by

dangerous people who want to hurt them. Many students do not know about privacy* and are surprised to

learn that adults can read their personal daily records easily. Students can also get into trouble when they put

information about others on their blogs.

     As a result, many schools have banned* the use of blogging web sites on school computers. Many

schools have also begun teaching parents about the web sites. Parents should know what their children are

doing online and should read their blogs to make sure they are not giving out private information. One way to

keep away from these problems is to use programs so that blogs can be read by"friends only." people can

read the website only if they know a secret word chosen by the blogger.

1. "Facebook" and "MySpace" are ________.

A. school subjects

B. computer programmes

C. School online BBS

D. blog sites for young people

2. Blogs may be dangerous because ________.

A. they get in the way of studies

B. they are not allowed for school students

C. surfing the Internet is bad for eyes

D. personal information can be found in blogs easily

3. This passage is mainly about _________.

A. the safety of children's blogs

B. how to search the internet

C. students' behavior at school

D. communicating with parents at home

4. According to the passage, many schools help children avoid blog problems

    by doing everything EXCEPT ________.

A. teaching parents about the web sites

B. asking students to use programs to refuse strangers

C. telling school students not to make any net friends

D. stopping students from blogging on school computers

5. You can enjoy your blog safely if ________.

A. you write your blog at school

B. use a secret number for friends to enter your blog

C. your parents have little knowledge about websites

D. you show all your writings and feelings in your blog

单项选择题