The Internet has become part of teenager life 不会做 , 高人求教!

The Internet has become part of teenager life 不会做 , 高人求教!
The Internet has become a part of teenager’s life. There’s a report on 3,375 students aged from 10 to 18 in seven Chinese cities. It says that 38 percent of them believe they use the Internet often. While most of them get useful information and use the Internet to help in their studies, some are not using it in a good way. Many are playing online games too much. A few even visit Web sites which they should not look at. Bad things can happen if young people spend too much time on the Internet.
In order to help young people use the Internet in a good way, a textbook on good Internet behavior has started to be used in some Shanghai middle schools this term. It uses real examples to teach students all about good ways of using the Internet. It gives useful advice such as it’s good to read news or find helpful information to study. Some students also make online friends. But if you are meeting a friend offline, let your parents know.
Teachers and parents all think the book is a very good idea. It will teach students how to be a good person in the online world. It will be a guide for teens to use the Internet and keep students away from bad sites.
66. The underlined word “it” means______.
A. the book B. report C. the Internet D. useful information
67. From the report, about ____ students between 10～18 years old in the seven cities use the Internet often.
A. 3,375 B. 1,280 C. 2,100 D. 3,000
68. What do most of the students do on the Internet?
A. To make online friends. B. To play online games.
C. To get useful information to help in their studies.
D. To visit Web sites they should not look at.
69. Why do teachers and parents think the book is a good idea?
A. Because it helps with the students’ studies.
B. Because it gives useful information for studying.
C. Because it is used in Shanghai middle schools.
D. Because it teaches students how to be a good person in the online world.
70. Choose the best title for the passage(文章).
A. The Internet has become part of teenage life. B. Students can’t use the Internet.
C. Be careful when using the Internet. D. How to be a good person.
It 是文章第四行的not using it 中的it 、

66题中的it是哪个啊?课文中没有划线的,请楼主明确指出.与前面 While most of them get useful information and use the Internet to help in .中的use the Internet 对应,所以选C.
67题：由It says that 38 percent of them believe they use the Internet often.知该题的答案为3,375 乘以38%=1282.5,因为题中说的是about(大约)所以答案应为与1282最接近的,所以为B .
68题：由While most of them get useful information and use the Internet to help in their studies,知答案为：C
69题：由最后一段前两句知答案为：D
70题：由文中首句和通篇都是谈青年人用网络做各种各样的事情知,答案应为A.

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