题目内容
Internet is widely used in our daily life. ( 81) Can you imagine a world without the Internet?
It's surprising to think about it. Now, China has more than 162 million Internet users,according to the China Inter?net Network Information Centre. This is the second largest number of users in the world after the United States.Today 66% of Chinese " netizens (网民)，，are teenagers." ( 82) 他们每周在网上花费大约13个小时，"said Qian Hulin，an Internet expert.Doctor Song in Beijing Xuanwu Hospital said about 14% of Chinese netizens who are teens often went on playing online games for over ten hours.
The main reasons why teenagers surf the web are to search for information to communicate with others and to have fun.On the Internet,teenagers can find out almost any?thing. (83) And surfing the web can help students with their homework and widen their knowledge.
Li Dong, a teacher at No. 41 Middle School in Shijiazhuang,is for her students using the Internet.( 84)"当我们在课堂上谈论一些话题的时候，students who surf the Net usually know more background information than the oth?ers," she said.
In addition, ( 85) people can use the Internet to write letters and send emails. Many teenagers keep in touch with their friends online.It is cheaper than phoning somebody far away and also much quicker.
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81.你能想象一个没有互联网的世界吗？
82. They spend about 13 hours on the Internet every week
83. 而且上网可以有助于学生做家庭作业
84. When we talk about some topics in class
85. 人们可以利用互联网来写信和发送电子邮件
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