问题 单项选择题

高血压病死亡原因最常见的为()

A.心肌梗死

B.脑血管意外

C.肾功能衰竭

D.心功能不全

E.心律失常

答案

参考答案:B

解析:高血压病的并发症主要发生在心、脑、肾,并可导致心肌梗死、心律失常、心力衰竭、肾功能衰竭等而死亡,但目前在我国,高血压病所致的脑血管意外仍是引起死亡的最常见的原因。

阅读理解

阅读理解。

     Now, China has the second largest number of Internet users in the world after the United States.

Many of Chinese Internet users are teenagers. They spend about 13 hours every week online. On the

Internet, students can find out almost anything. Surfing the Internet(网上冲浪)can help them with their

homework and learn a lot of knowledge.

     People can use the Internet to write letters, stories and to send emails. Many teenagers keep in touch with their friends online. They can also make new friends through QQ or ICQ.

     Some of the students surf the Internet just for fun. They like to listen to music, watch films, and go to

their favourite stars' websites.

     But some parents always think that the Internet takes young people away from study. "They spend

too much time playing computer games and most games are about killing and fighting. It's too dangerous.

And there are some dirty things on the Internet, "says the mother of a 13-year-old boy.

1. According to this passage, China has the ______ highest number of Internet users.

A. second

B. third

C. fourth

D. fifth

2. The phrase"keep in touch with"means ______ .

A. 浏览网站

B. 交朋友

C. 打电话

D. 保持联系

3. Some of the students surf the Internet for fun. What can they do?

A. They can listen to music and watch films.

B. They can go to their favourite stars' websites.

C. A and B.

D. We don't know.

4. Some parents worry that the Internet is ______ .

A. helpful

B. dangerous

C. traditional

D. useful

5. What's the best title of this article?

A. The Internet

B. The Computer

C. The Teenagers

D. Surfing the Internet

填空题