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1. Each number in a binary system are formed from only two symbols. A B C D 2. Scientists at the medical center is trying to determine if there is a relationship between saccharin and cancer. A B C D 3. On the rim of the Kilauea volcano in the Hawaiian Islands are a hotel called the Volcano Hotel. A B C D 4. The great digital advances of the electronic age, such as integrated circuitry A B C and a microcomputer, has been planted in tiny chips. D 5. There are many frequently mentioned reasons why one out of four arrests involve a juvenile. A B C D 6. More than half of the children in the 1,356-member district qualifies for reduced-price or free lunches. A B C D 7. Five miles beyond the hills were a fire with its flames reaching up to the sky. A B C D 8. The weather reports all showed that there were a tremendous storm front moving in. A B C D 9. An understanding of engineering theories and problems are impossible until A B basic arithmetic is fully mastered. C D 10. There is twenty-six bones in the human foot, fourteen of which are in the toes. A B C D 11. Some of the eye movements used in reading is actually unnecessary. A B C D 12. The most common time for tornados to occur are in the afternoon or evening on a hot, humid spring day A B C D 13. A quantitative analysis, using both the computer and quantitative techniques, are used to A B C optimize financial decisions. D 14. The registrar does not know how many people is already registered at the hotel for the annual convention. A B C D 15. The passengers, tired after a very long trip, was relaxing in every available seat in the airport lobby. A B C D 16. I tried to make it clear to them that urgent action were required. A B C D 17. Echoes occur when sound waves strike a smooth surface and bounces backwards. A B C D 18. The influence of the nation’s literature, art, and science have captured widespread attention. A B C D 19. In 1872, the US Congress declared that Yellowstone to be the first national park. A B C D 20. Farming now use 10 percent of the earth’s land area to produce food. A B C D 21. In the past, some of the most highly stressed areas in education was the moral improvement of students. A B C D 22. The natural conditions in the US which most affecting manufacturers are factory power and labor supply. A B C D 23. The result of the studies have had a strong impact on future developments. A B C D 24. The result of the evaluations and recommendations show that more effort needs to go into research. A B C D 25. Library visitors often find that there are so few staff members available to help them, A B especially when funding for libraries have been reduced. C D 26. The combination of two programmes are causing serious problems in the technical field. A B C D 27. Neither the Browns nor Alice are watching the film on television. A B C D 28. The actor, with his wife and children, were present at the opening ceremony of the event. A B C D 29. Neither my traveler’s cheques nor the money I had with me were sufficient to pay the bill. A B C D 30. The number of students attending the seminar are smaller than registration numbers. A B C D 31. The rumours about the president’s death was completely unfounded. A B C D 32. Scientists say that the Earth is unique because no other planet has conditions A B which enables the existence of intelligent life. C D 33. Despite the recent industrial revolution, all the forms of traditional craft A B has been preserved in that museum. C D 34. Science with its inventions and discoveries have revolutionized man’s life. A B C D 35. A number of tourists is going to return the evaluation form distributed by the travel agent. A B C D 36. His commercial activity, trading in cars, have already brought him a fortune. A B C D 37. Before bridges were built, all transport across major rivers in the United States were by ferry boat. A B C D 38. On the floor of the Pacific Ocean is hundreds of flat-topped mountains more than a mile beneath sea level. A B C D 39. A basic knowledge of social studies, such as history and geography, are considered a basic A B C part of the education of every child. D 40. Although there were a lot of opposition initially, many people now accept that A B C infertile couples have the right to medical help. D

EX6. Sắp xếp các từ cho sẵn thành câu hoàn chỉnh. 1. many/ went/ to/ volunteer/ ,/ Last year/ the/ and/ flooded area/ free food/ people/ gave to/./ ________________________________________________________________________ 2. rebuild/ helped/ houses/ They/ trees/ also/ plant/ and/ people/./ ________________________________________________________________________ 3. people/ donated/ generous/ for/ people/ Many/ poor/ money/./ ________________________________________________________________________ 4. I/ joined/ a student/ ,/ was/ When/ charitable work/ I/ often/ in/./ ________________________________________________________________________ 5. my friends/ used to/ remoted areas/ travel/ help/ to/ to/ people there/ I/ with/./ ________________________________________________________________________ 6. mountainous/ for/ areas/ weeks/ We/ in/ stayed/ the/./ ________________________________________________________________________ 7. the chidren/ read/ there/ We/ taught/ and/ write/ to/./ ________________________________________________________________________ 8. a volunteer/ was/ a/ experience/ wonderful/ Being/./ ________________________________________________________________________ 9. I/ busy/ graduated/ was/ After/ ,/ I/ very/./ ________________________________________________________________________ 10. I/ Now/ do/ still/ charity/ my/ in/ hometown/./

EX13. Chọn câu có cùng ý nghĩa với câu cho sẵn. 1. The last time I ate sushi was the last summer. A. I have eaten sushi since the last summer. B. I haven’t eaten sushi since the last summer. 2. I last saw her on Monday. A. I haven’t seen her since Monday. B. I have seen her since Monday. 3. I haven’t watered this tree for a week. A. The last time I watered this tree was a week ago. B. The last time I didn’t water this tree was a week ago. 4. I started collecting stamps last winter. A. I have collected stamps since last summer. B. I have started collecting stamps since last summer. 5. How long have you worked as a volunteer? A. When did you start working as a volunteer? B. When have you worked as a volunteer? 6. This singer’s last performance was in Jly 20th. A. This singer has performed since July 20th. B. This singer hasn’t performed since July 20th. 7. They began playing tennis in the spring of 2012. A. They have played tennis since the spring of 2012. B. They haven’t played tennis since the spring of 2012. 8. I last went to the zoo when I was 10. A. I haven’t gone to the zoo since I was 10. B. I have gone to the zoo since I was 10.

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