trên hai nửa mặt phẳng đối nhau,bờ t phẩy và t ta vẽ hai tia Ox và Oy(O thuộc t phẩy và t) chứng tỏ rằng hoặc tia Ot hoặc tia Ot phẩy nằm giữa hai tia Ox và Oy nhớ vẽ hình nha

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Today, computer companies sell many different programs for computers. First, there are programs for doing math problems. (26)_________, there are programs for scientific studies. Third, some programs are like fancy typewriters. They are often used by writers and business people. Other (27)_________are made for courses in schools and universities. And finally, there are programs for fun. They include word games and puzzles (28) _________ for children and adults. There are many wonderful new computer programs, but there are other reasons to like (29) _________ . Some people like the way computers hum and sing when they (30) _________ . It is a happy sound, like the sounds of toy and childhood. Computers also have lights and pretty pictures. And computers (31) even seem to have personalities. That may sound strange, but computers seem to have feelings. (32) _________ they seem happy, sometimes they seem angry. It is easy (33) _________ they are like people. 26. A. Two B. Second C. Twice D. Double 27. A. programs B. people C. students D. typewriters 28. A. to B. with C. for D. of 29. A. programs B. reasons C. games D. computers 30. A. work B. have worked C. are working D. worked 31. A. even B event C. so D. because 32. A. Sometime B. Sometimes C. No D. Often 33. A. to think B. thinking C. for thinking D. that thought 26. 27. 28 29. 30. 31. 32 33 VI. Give the correct form of the words in bracckets 34. Vietnamese people are very ______ and hospitatable. (FRIEND) 35. By learning English, you can get access to the world’s ______ (DEVELOP) 36. Tet holiday is the most important ______ for Vietnamese people. (CELEBRATE) 37. Ha Long Bay was ______ by UNESCO as a World Heritage Site. (RECOGNITION) 38. Discovering penicillin made Sir Alexander Fleming ______ (FAME) 34. 35. 36. 37. 38. VII / Read the following passage and choose the correct answer to each question. Pollution can be seennot only throughout the world, but also in our own homes. It comes from household chemicals, the amount of water people use and the waste people produce and throwaway. What can be done to stop this pollution? Surprisingly, a person can help save the environment by doing simple things. First, we need to recycle, which allows products to be used over and over again. Recycling can also reduce the number of trees cut down to produce paper products. It takes very little effort. It is not hard to place plastic and glass bottles, aluminum cans and paper in a bin. Anyone can do it. Second, we need to watch the amount of water used in the home. It can be conserved by taking short showers instead of baths, repairing leakyfaucets, using the dishwasher or washing machine only when fully loaded, or simply turning the faucet off while brushing your teeth. Third, we need to reduce waste. We need to recycle whenever possible, but should also try to use this waste effectively. Forexample, grass clippings and food scraps can be made into compost for plants. The average person produces 4.3 pounds of waste every day, but we can reduce that amount by recycling andreusing. If we do our part in our own homes, we can help keep the planet from becoming more polluted. 39. Pollution comes from the following sources except _________ . A. water in river B. water from households C. wastes D. house chmicals 40. Recycling can help us _________ . A. never cut down trees B. produce more paper products C. place garbage bins easily D. use products again and again 41.In order to save water, we can do all of the following things except _________ A. fully use the washing machine B repair leaky faucets C. take short showers instead of baths D. turn the faucet off while brushing your teeth 42. Recycling helps to reduce waste because _________ . A. plants need to develop B. waste can be recycled and reused C. a person can do it in his home D. an aveage man produces compost for plants 43. The word “It” in paragraph to refer to _________ . A. cutting down B. the number C. recycling D. effort 44. The average person produces every day _________ . A. three point four pounds of waste B. thirty four pounds of waste D. four point three pounds of waste D. forty three pounds of waste 45. If we do our part in our own homes, we can help keep _________ . A. the planet from becoming less polluted B the planet from becoming more polluted C. the house from becoming few polluted D.the planet from becoming little polluted 39. 40. 41. 42. 43 44 45