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honghy2606
2 năm trước
có ba lọ đựng khí oxi, khí nitơ và khí cacbonnic đc đậy kín . bằng phương pháp hóa học hãy nhận biết chất khí trong mỗi lọ . viết phương trình hóa học xảy ra ( nếu có )
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I. Fill in the blank with a suitable word. “Do you like sport?” You can hear this (1) very often. Many people answer “yes, I do”, and (2) think about watching a game of football at a stadium, or (3) TV while sitting in a comfortable armchair. But watching sport events and going in for sport (4) two different things. Let‟s hope that you prefer the second. Sport holds (5) important place in our life. When you listen to the radio early in the morning, you can always (6) sports news. When you open a newspaper, you will always find (7) about some game or other or an article about your favourite kind of sport. Especially interesting stories are (8) famous men or women in the world of sport, how they became champions and about (9) plans for the futures. Television programmes about (10 ) are also very popular, and you can watch something interesting practically every day. II Complete the conversation with the words in the box. them played end score scored dear Pauline: You look tired. Owen: I am. I (1) football this morning. Pauline: What was the (2) ? Owen: 5-1 to (3) . Pauline: Oh (4) . Owen: It's not the (5) of the world. I (6) our goal. III. Match the questions and answers, and then write the answers in the blanks. 1. What's your favourite sport? a. No, not really. 2. Who's your favourite sportswoman ? b. Three or four times a week. 3. How often do you go swimming? c. She's a skier - but I can't think of her name right now. 4. What's your favourite football team? d. Liverpool. 5. Do you like volleyball? e. Running

I. Combine two sentences into one, using the connectives from the list: and, but, because, so, therefore, or, moreover, however, if, when, unless. 1. You can’t borrow my dictionary. You bring it back on Monday. ________________________________________________________________________ 2. The cost of installation is very high. Solar domestic heating systems are economical to use. ________________________________________________________________________ 3. Solar panels are placed on the roof of a house. The Sun’s energy is used to heat water. ________________________________________________________________________ 4. I don’t agree with a lot of his teaching methods. He is a good teacher. ________________________________________________________________________ 5. We’d better not waste water. We won’t have enough to drink sooner or later. ________________________________________________________________________ 6. The house is quite beautiful. The cost is not too high. ________________________________________________________________________ 7. Do you want to study more? Do you want to look for a job? ________________________________________________________________________ 8. You can go home. You’ve finished this exercise. ________________________________________________________________________ 9. I don’t get many opportunities to practise my English. I find it difficult to remember everything I study. ________________________________________________________________________ 10. I’m practising speaking English a lot. I don’t want to fail in the oral test. ________________________________________________________________________

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