learn how to use the computer and get more informations from the Internet. We can read good newspapers and magazines. It can make us clever in playing computer games. I can send e-mail to our friends quickly. We can chat online, it can help us get in touch with people from all over the world. But some students spend too much time playing computer games and some stay in the net bars all day and all night. As the result, their life goes very bad with them. In my opinion, we mustn't go online while it is time for us to study. We can do in summer or winter holidays.

8. My grandpa was used to dislike television. He thought that people spent too much time watching it. A lot of his friends, therefore, always talked about the sports programs and films on it. They never read many books or go out in the evenings so he refused to buy a TV set. Last year he was 60 and retired his job. My father bought him a TV set, said "It will make you to learn some of the latest news". It is quite true. He has watched all the news programs. He knows far much about the world now. And he reads more books, either. In fact, he thinks he may follow one of the Open University TV course next year. Perhaps he'll get a degree when he is 65.

9.The "white pollution" problem was caused by used plastic is becoming increasingly serious, on which plastic shopping bags play an important role. In China about three billions plastic shopping bags are used every day, that results in a great waste of resources and heavy environmental pollution. Lucky, the government put a nationwide ban on the use of free plastic bags, demand that no stores and supermarkets should provide customers with free plastic bags after June 1, 2007. The rule will undoubtedly reduce use of plastic bags or promote the awareness of environmental protection. He is strongly suggested that everyone turns to cloth bags and shopping baskets.

10 .To improve your English reading, you should, first of all, choose something you feel it important or interested to read. Do not try to read everything. You should begin with those which written in simple English. Do not read those which prove difficulty for you at the very beginning. As reading, do not read too slowly or look up every new word. After reading a passage and having its main idea in mind, you may turn on and read it again. This time you read a passage slowly and look up some new words if necessary. Keep on reading in this way, and you'll surely make a progress little by little.

Key to Test 1

1. to-->by 2. visit ∧writing: the 3. It-->What 4. was used to 5 sit-->sitting

6. wondered--> wondering 7. late-->later 8. out-->up 9. titles-->title 10. then∧we: did

[解析] 3. what引导一个主语从句，意为：令我们很是吃惊的是......。8. show up：露面。 10. 注意倒装结构。

Key to Test 2

1. unless-->if 2. classmate-->classmates 3. master your English 4. learn-->learning

5. possibly-->possible 6. on (your free time)-->in 7. interests-->interest 8. ∧joining: and

9. a-->an 10. it-->one

[解析] 4. "English learning"是 -ing短语做make的宾语。 10. one泛指单数可数名词，此处指的是一个英语角。

Key to Test 3

1. experiencing-->experienced 2. What-->As 3. by-->in 4. like∧terrible: a

5. advices-->advice 6. for-->off 7. you-->your 8. extreme-->extremely

9. but 10. such-->so

[解析] 2. As you already know, 非限制性定语从句，"正如你所知"。8. 副词extremely修饰形容词important。

Key to Test 4

1. You're-->It's 2. As-->If/When 3. crowd-->crowded 4. to the work