a/ - ( -98) - ( -54) -( +300) b/ 54 : ( - 9) + 11. ( -6) c) (38 - 41)² . 2³ + |- 400|: 10² cho 5 sao luôn

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aTrong kì thi học sinh giỏi môn Toán cấp trường của một trường THCS, điểm của các thí sinh được ghi lại trong bảng sau: 8,5 10 7,5 6,0 7,5 8,0 7,0 5,0 8,0 7,0 6,0 9,5 7,5 8,0 6,0 7,5 6,0 8,5 9,0 7,5 b) Ban Giám khảo quyết định trao giải nhất cho các thí sinh có điểm cao nhất; giải nhì cho các thí sinh không đạt giải nhất nhưng có điểm bài thi từ 9 điểm trở lên, giải ba cho các thí sinh đạt điểm từ 8 đến 8,9 điểm. - Số thí sinh đạt giải nhất là: - Số thí sinh đạt giải nhì là: - Số thí sinh đạt giải ba là:

UNIT 6.1: THE ENVIRONMENT I. Choose the word or phrase (A, B, C or D) that best fits the space in each sentence. you are interested in this film, don't go to see it at any cost. С. Весause all the bags and take them to the garbage dump. C. catch 1. A. If B. Unless D. So 2. We are going to A. litter B. collect D. fine 3. To catch a lot of fish people began to use A. electricity 4. We must do something to B. net C. lure D. landing net the environment. C. save B. pollute D. prevent A. reduce 5. There will be severe A. typhoons 6. People every year if we cut down the trees in the forest. D. rain C. foods no fresh water to use if the water is polluted. B. floods D. have C. Won't have with dust from a cement factory. C. polluted B. has A. will have 7. The environment in my area is A. pollute 8. We couldn't go on a picnic as planned B. cleared D. purified it was raining hard. D. so C. because food. A. however B. but 9. I think people should use tree leaves for A. wrapping D. recycling C. making all the trash on the ground before leaving. C. off B. rolling 10. You should clear A. over B. out D. up 11. In order to keep the school ground tidy and clean, put B. garbage cycle around the school yard. D. trash cans A. garbage bins 12. Plastic bags are very hard А. to appear C. garbage box they will cause pollution. C. to dissolve B. to disappear D. to go away 13. I prefer to use buses rather than motorbike to avoid B. accidents A. traffic jams C. incidents D. happenings 14. Every day trash is collected and taken to the B. ground A. yard C. garbage dump D. trash place the water was very dirty, we decided not to go swimming. C. Because 15. A. As B. Since D.All are correct We have to keep our school yard tidy and clean. B. put trash 16. Don't A. litter C. waste D. reduce garbage our environment. 17. We are all slowly destroying the earth by A. setting 18. It's dangerous to use A. electricity 19. The local authority should C. minimizing to catch fish. People may die from electric shock wav B. polluting D. confining B. fish hooks C. fish net D. fish rods the fish catching by electricity. C. prohibit A. allow B. permit D. give up 20. We can't swim in the river. There is trash on the water surface. A. swimming B. floating C. diving D. bathing

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4. Choose the right adjective. 1. Helen finds her job... .. (boring/bored). She wants to do something different. 2. I seldom visit art galleries. I'm not very (interesting/interested) in art. 3. We went for a very long walk. It was very... ..(tiring/tired) 4. Why do you always look so..... ...(boring/bored)? 5. It was a really.. .(terrifying/terrified) experience. Afterwards everybody was very......... .(shocking/ shocked). 6. I had never expected to be offered the job. I was really .(amazing/ amazed) when I was offered it. 7. The kitchen hadn't been cleaned for ages. It was really (disgusting/disgusted). (embarrassing/ embarrassed)? (disappoingting/ disappointed). I expected it to be much better. .. (interested/ interesting) in sport. 8. Do you easily get. 9. The film was 10. I'm not very

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4. Choose the right adjective. 1. Helen finds her job... .. (boring/bored). She wants to do something different. 2. I seldom visit art galleries. I'm not very (interesting/interested) in art. 3. We went for a very long walk. It was very... ..(tiring/tired) 4. Why do you always look so..... ...(boring/bored)? 5. It was a really.. .(terrifying/terrified) experience. Afterwards everybody was very......... .(shocking/ shocked). 6. I had never expected to be offered the job. I was really .(amazing/ amazed) when I was offered it. 7. The kitchen hadn't been cleaned for ages. It was really (disgusting/disgusted). (embarrassing/ embarrassed)? (disappoingting/ disappointed). I expected it to be much better. .. (interested/ interesting) in sport. 8. Do you easily get. 9. The film was 10. I'm not very