2010年9月14日，第65届联合国大会在纽约联合国总部开幕。温 * * * * 出席会议

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

实验室中所用少量氯气是用下列方法制取的，4HCl（浓）+MnO₂

△   .

Cl₂↑+MnCl₂+2H₂O

试回答下列问题：

（1）该反应是氧化还原反应吗？______，如果是氧化还原反应，请指出______是氧化剂，______是还原剂，______是氧化产物，______是还原产物，根据上述氧化还原反应式判断氧化性：______＞______；还原性：______＞______．

（2）写出该反应的离子方程式______       

（3）用双线桥法标出该反应电子转移的方向和数目______．

5岁，男孩，因夜尿增多，检查发现尿糖阳性，为明确诊断，需作OGTT(口服葡萄糖耐量试验)。

其葡萄糖用量为

A．1.0g/kg

B．1.25g/kg

C．1.5g/kg

D．1.75g/kg

E．2.0g/kg

机车行近（）以及前有车辆或者视线有障碍时，必须减速慢行，并发出警号。

A.巷道口

B.硐室口

C.弯道

D.道岔或者噪声大等地段

《素问·热论》中关于伤寒病的危险期是在（）

A.六七日之间

B.十日以上

C.三日

D.四日

E.五日