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kieu17524
2 năm trước
Hai đường thẳng xx' và yy' cắt nhau tại A tạo thành hai cặp góc đối đỉnh A1 và A3; A2 và A4. Tính số đo mỗi góc trong trường hợp sau: A2 - A1 = 50 độ
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V)-Circle the mistake in each sentences, and then correct it. 22. Long exposure to loud noise results permanent hearing loss. 23. The misuse of resources and importer dumping of waste make land pollution. 24. The soil becomes contaminated because the use of so many pesticides and other farming chemicals. 25. Oil slicks from boats or ships pollute the sea, because many fish and sea-birds die. 26. In many developing countries, water pollution is usually a leading cause of death if people drink from polluted water resources. 27. We should plant trees in our neighbourhood so trees help cool the planet. VI)-Combine each pair of sentences, using the words/ phrases in brackets. You can make some changes. 28. We are unable to see the stars in the sky. Light pollution occurs. (makes) 29. Glass panels, windows, lawns and roofs make light pollution worse. They reflect both artificial and sun light. (because) 30. All sounds are not noise. Noise is any sound that is unwanted and goes beyond its certain limit, for example, above 80 decibels. (because) 31. More and more noise is created by modern civilization. It has now become a major environmental pollutant, especially in urban areas. (so) 32. Contamination in the air happens. There is acid rain which damages soil, vegetation and aquatic life of the region. (causes) 33. Noise pollution is one of the major causes of stress and anxiety. People suffer from stress and anxiety. (because of) VII)-Rearrange the sentences in order to make a meaningful conversation, writing the correct letter (A-H) in each blank. The conversation starts with number 0. 0 Mi: Nick, last Sunday my mother and I went to the mall in the city center to buy some new clothes for our Tet holiday. The streets were so bright at night. 34. A. Mi: I see. Do you know any other example of light pollution? 35. B. Mi: Besides the waste, light pollution many affect human health and our sleep cycles. 36. C. Mi: Light pollution? Our teacher has just mentioned it in the lesson this morning. Why is too much light at night harmful? 37. D. Mi: And sometimes we also have extra or unnecessary lights around the house. 38. E. Nick: I enjoy Tet in Vietnam, Mi. But a lot of lights and posters along the streets may cause light pollution. 39. F. Nick: You’re right, Mi. I think it is very wasteful because we use much more energy to light up the city or our home all day round. 40. G. Nick: Because it may prevent us from seeing the stars and other planets. 41. H. Nick: Yes, we can mention street lamps that shine in all directions, instead with a hood to point light downward the streets, or cities with lights all night long. E đag gấp lắm ah :<

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