女性，68岁，有糖尿病史10年。在硬麻下行急诊阑尾切除术。手术中心率逐渐由72次／分

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

治疗阳郁厥逆最适宜的方剂是（）

A.四逆散

B.四逆汤

C.肥儿丸

D.小承气汤

E.回阳救急汤

混凝土的耐久性是指混凝土抵抗环境介质作用并长期保持其良好的使用性能和外观完整性的能力。它是一个综合性概念。包括（）。

A.抗渗

B.抗冻

C.抗疲劳

D.碳化

E.碱骨料反应

《铁路人身安全标准》规定．必须横越列车、车列时，应先确认列车、车列暂不移动然后由（）越过。

A.通过台或两车车钩上

B.车钩下

C.车底下

D.车辆上