80. Beijing ,the capital of China , is the political and ________(culture) centre of China .

Ⅵ、句型转换，每空一词。(10分)

79.It usually takes me one and a half ________ (hour) to do my homework every day .

77. Where are you these days ? I _________ ( not see ) you for a long time.

78 Most of us think this activity is very _______ ( mean) and great .

76. The students walk to school happily , ___________( sing) all the way .

75. When the boys saw the famous football star , they screamed with ________ (excite ).

74. This kind of food isn’t ___________ ( harm) for your body .You can have it every day .

73. The museum has been in _________ ( serve ) for 10 years .

72. There will be lots of ___________ (travel) coming to Beijing this year .

71. Look ! The boy’s ________ ( lie ) on the grass.

　　　　　　　　　　　　　　 　C

Many children use the Internet to get knowledge and information , and to relax in their free time .But some of them are not using it in a good way . Here are some rules to make sure you are safe and have fun on the Internet .

1.　　　 Make rules for Internet use with your parents . For example , when you can go online , for how long and what activities you can do online .

2.　　　 Don’t give your password (密码) to anyone else , and never give out the following information: your real name , home address ,age , school , phone number or other personal information .

3.　　　 Check with your parents before giving out a credit (信用) card number .

4.　　　 Never send a photo of yourself to someone in e-mail unless your parents say it’s OK .

5.　　　 Check with your parents before going into a chat room (聊天室). Different chat rooms have different rules and attract different kinds of people . You and your parents should make sure if it’s a right place for you .

6.　　　 Never agree to meet someone you met on the Internet without your parents’ permission(允许). Never meet anyone you met online alone .

7.　　　 Always remember that people online may not be who they say they are . Treat everyone online as if they were strangers .

8.　　　 If something you see or read online makes you uncomfortable , leave the site . Tell a parent or teacher right away .

9.　　　 Treat other people as you’d like to be treated . Never use bad language .

10.　 Remember ----- not everything you read on the Internet is true .

(　 ) 66. The writer tells children to ______ .

A、send their own photos to him 　　　　　　B、make rules for Internet use with parents

C、believe everything they read on the Internet　 D、give out their personal information

(　 ) 67. It’s good for children to _______ on the Internet .

A、give password to others 　　　　B、get useful knowledge and information

C、give out a credit card number 　D、go into a chat room as they’d like to

(　 ) 68. What shouldn’t be done when you are on line ?

A、Using bad language .　　　　　　　　　　 B、Sending messages and e-mails .

C、Leaving the site if you feel uncomfortable .　 D、Treating everyone online as strangers .

(　 ) 69 . If your parents don’t agree , never _______ .

A、read anything on the Internet 　B、relax in your free time

C、have a face-to-face meeting with anyone you met online

D、treat other people as you’d like to be treated

(　 ) 70. The best title for this passage is “_______ ’’.

A、How to Use Computers 　　　　B、Surfing on the Internet

C、Information on the Internet 　　　D、Internet Safety Rules

Ⅴ、用所给词的适当形式填空 (5分)