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Cho đường tròn o,R đk AB=2R điểm c nằm trên tia đốiBA sao cho B thuộc R. Đt vuông góc vs BC tại C cắt ad tại M Cm tứ giác BCMN nt Cm AB.AC=AD.AM Cm CD là tiếp tuyến của đ. Tròn (0) ĐT (0) chia tâm giác ABM thành 2 phần. Tính s tam giác ABM nằm ngoài (0) theo r
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31. I am interested in natural science _____________like Chemistry and Physics. A. subjects B. objects C. topics D. themes 32. Steam engine has been known as a remarkable _____________in science and technology. A. breakdown B. break-up C. breakthrough D. outbreak 33. We will _____________chips in the brain to control devices in the future. A. implant B. add C. include D. attach 34. The _____________of penicillin, one of the world’s first antibiotics, marks a true turning point in human history A. generation B. exploration C. invention D. discovery 35. The group of doctors has spent 8 months_____________ the side - effects of this new vaccine. A. having examined B. to examine C. examining D. to have examined 36. The doctor said that this disease _____________prevented by vaccine. A. can B. can be C. could D. could be 37. Her teacher told her that there _____________still room for her improvement in her work. A. has been B. had been C. is D. was 38. A mechanical calculator which could do additions or subtractions very quickly was _____________by Little Pascal. A. found out B. discovered C. found D. invented 39. Science and technology have_____________ the life safe, secure and comfortable. A. transformed B. made C. done D. changed 40. Facebook was built on the_____________ of earlier social network sites like MySpace and Bebo. A. succeed B. successful C. successfully D. success 41. The facsimile _____________by Alexander Bain in 1843. A. invented B. was invented C. has been invented D. has invented 42. If I _____________my computer now, I _____________for the answer on the Internet. But I left it at home. A. have - will search B. have had- would have searched C. had - would search D. had - would searched 43. My younger sister confessed _____________my diary. A. to read B. reading C. to have read D. to have reading 44. Fortunately, he could manage _____________a telescope on his own. A. to make B. making C. to have made D. to have making 45. Do you agree that playing computer games might make players think _____________? A. critic B. critical C. critically D. criticism 46. Science and technology have_____________ the life safe, secure and comfortable. A. transformed B. made C. done D. changed 47. Dave asked me if robots in the future_____________ more user-friendly and more intelligent. A. will be B. would be C. will have been D. will be being 48. _____________ I borrow your Ipad so that I can enjoy some music now. A. May B. Might C. Could D. Shall 49. Frequent Internet _____________ will cause many troubles for our online classroom today. A. disconnection B. interruption C. disconnected D. interrupted 50. Many people think the cyber world might _____________ the real world one day. A. provide B. take place C. take up D. replace

It is a common saying that we do not fully value a thing until we lose it. We often value the love and worth of a friend when he has been taken from us by death more than when he was with us in the flesh; it is only when we have left school or college that we understand the greatness of our opportunity of education, which has gone forever; and it is the sick and the ailing who realize the value of good health. When we are young and strong, we cannot imagine what it is like to be weak and ill. We are so used to vigorous health that we take it for granted. The organs of our body work so smoothly that we scarcely know we have lungs and liver, heart and stomach. But when any of these gets upset and gives us pain and sickness, we learn by bitter experience what an unspeakable blessing it is to be well. Loss of health makes us miserable, and a burden to ourselves and our friends. It cripples our efforts so that we cannot accomplish many of the good and great things we might have done. It spoils our life. What must we do to keep our health? We must be moderate in eating and drinking and wise in the choice of plain, wholesome simple food. Gluttony has killed thousands, and strong drink tens of thousands. We must, when young, get plenty of sleep, which is “nature’s sweet restorer”, and not try to burn the candle at both ends. We must live as much as possible in the open air and keep our rooms well ventilated. We must get sufficient and regular physical exercise, and keep our bodies clean. And we must avoid bad habits and secret sins as we avoid the devil, and keep our thoughts clean and our bodies pure. Our ideal must be the sound mind in the sound body. 28. According to the passage, we often appreciate our friends . A. only when they are with us B. only when they are good to us. C. only when they passed away D. only when they live a long way from us. 29. We do not take care of our health because . A. we are always in good health B. most of the diseases can be cured nowadays C. we are so accustomed to good health D. we are so busy making a living 30. Poor health makes us . A. useless B. unable to fulfill our expectations C. a shame to our friends D. fail to become famous 31. According to the author, having plenty of sleep when we are young . A. is wasting our time B. can help us regain our strength C. may cause loss of health D. can reduce our vigour 32. The best title for the passage is . A. Health and Human Aspirations B. Health and Our Success C. How to Keep Our Health D. The Value of Health

I. Choose the best answer to complete each of the following sentences. 1. I _____________ my report by 9 o'clock, I hope. A. will finish B. will be finished C. will have finished D. will be finishing 2. A: I'm trying to move this cupboard, but it's very heavy. B: Well, _____________ you, then. A. I help B. I'll help C. I’ll be helping D. I'm going to help 3. Hoa told me that _____________ our new teacher of English. A. she wants to become B. she wanted to become C. she will become D. she wanted becoming 4. _____________ in science and technology have changed people's life dramatically. A. developing B. developed C. development D. developments 5. Lan asked me if I_____________ that exciting baseball match on TV the previous day. A. watched B. have watched C. was watching D. had watched 6. Stephen _____________me he'd bought that suit in a sale. A. said B. spoke C. told D. claimed 7. They said that they _____________ a special TV which could perform two different channels at the same time. A. had bought B. are going to buy C. have bought D. will buy 8. Don't worry! I _____________ you to solve the problem. A. help B. helped C. will help D. helping 9. Jason asked Linda where she _____________ the month before. A. stayed B. had stayed C. have stayed D. have been staying 10. When I last saw Carrie, she told me she _____________ but now she's changed her mind. A. thought B. is thinking C. was thinking D. has been thinking 11. The little girl asked her father “ _____________ the dress for me?” A. You buy B. You would buy C. You will buy D. Will you buy 12. The teacher said_____________ a week off on the occasion of the International Labour Day. A. we will have B. we didn't have C. we have D. we would have 13. Don't phone me between 7 and 8. We _____________ dinner then. A. will have B. will be having C. will have had D. will have been 14. They are both keen Arsenal _____________. A. supporters B. supporting C. supported D. supports 15. He suggested _____________ camping that Sunday. A. going B. goes C. went D. gone 16. What time _____________ ? A. the train will leave? B. will the train have been leaving? C. does the train leave? D. is leaving the train? 17. "Shall we meet at seven o'clock?" "No, I’ll still _____________ then." A. work B. have worked C. be working D. have been working 18. The country's economy relies heavily on the tourist _____________. A. industry B. factory C. company D. firm 19. Do you know who _____________ the fact that sound travels in waves? A. invented B. developed C. discovered D. found 20. Her parents hope that he_____________ a famous biologist one day. A. will be B. will have been C. is going to be D. will be being 21. Someone _____________ me there's been an accident on the motorway. A. asked B. said C. spoke D. told 22. Elie asked Stand_____________ to look at the new catalogue. A. did he want B. do you want C. if he wanted D. whether he wants 23. They said that we_____________ our houses and devices by our voice in the future. A. can adjust B. could adjust C. adjust D. will adjust 24. At 8 a.m. tomorrow, Janet_____________ a test on the importance of technology in the next 20 years. A. will be taking B. will being take C. take D. was taking 25."What did the man say when you challenged him?" "He said he _____________ pay for the things in his bag, but I didn't believe him!" A. is going to B. has been going to C. goes to D. was going to 26. The librarian asked us _____________ so much noise. A. don't make B. not make C. not to make D. not making 27. Last week Justin said, "I’ll do it tomorrow". He said he would do it _____________. A. the following day B. the previous day C. tomorrow D. yesterday 28. She suggested that they _____________ her a birthday party. A. should give B. shall give C. would give D. will give 29. She warned the boys _____________ too far. A. don't swim B. doesn't swim C. not to swim D. to not swim 30. No _____________ was found after the tenth day of treatment. A. improve B. improvement C. improving D. improved

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