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tranthaolvie15x3
2 năm trước
Câu 1: Em bảy trình bày mỗi quan hệ giữa Nhà nước và công dân nước Công hòa xi hội chủ nghĩa Việt Nam? Câu 2: Hãy nêu 3 biếu biên vì phạm quyền trẻ em mà em biết? Theo gm cần làm gì đế hạn chế những biểu hiện độ?
Thích Trả lời Chia sẻ

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Bài 1: (3,0 điểm) a./ Trong các đơn thức sau đơn thức nào đồng dạng với đơn thức 20xy: 3x 2 y; 25xy ; 20x ; –xy; x2 ; 2020x2 y 2 . b./ Hãy thu gọn và tìm bậc của đa thức: P = – 6x3 y + 7x3 y 2 + x3 y – 7x 3 y 2 + 2x 2 y + xy –x 2 y. Bài 2 : ( 2,0 điểm) a./ Viết biểu thức đại số biểu thị diện tích hình thang có độ dài hai đáy a(cm) và b(cm), đường cao h(cm) b./ Tính diện tích hình thang khi a = 7 (cm), b = 9 (cm), h = 3 (cm). Bài 3 : ( 2,0 điểm) Thực hiện phép tính. a./ 5x3 y 2 . (–6x 4 y 3 ) b./ – 5x 3 y 2z + 4x3 y 2z +5x 3 y 2z Bài 4: (3,0 điểm). Cho tam giác ABC vuông tại A với AB<AC. Trên cạnh AC lấy điểm D ( D khác A và C) a./ So sánh BA và BD b./ So sánh BC và BD c./ Nếu BD là tia phân giác của góc ABC. Hãy so sánh DA và DC

Choose the letter A, B, C, or D whose underlined part is pronounced differently from that of the rest. A. effect B. extinct C. kilometre D. destruction A. zoo B. choose C. flood D. afternoon Choose the letter A, B, C, or D whose main stress is placed differently from that of the rest. 3. A. locate B. contain C. water D. exist 4. A. conservation B. variety C. reconstruction D. circulation Choose the best answer to complete the following sentences. 5. If we do not look after our environment, zebras can become an .................. species. A. enclosed B. infrequent C. imperiled D. endangered 6. If Ellen ............. the contest, she would have shared her prize with me. A. wins B. won C. had won D has won 7. She has been painting all day. Look! She ............. the kitchen already. A. is painting B. panted C. has painted D. had painted 8. Dinner .................. between six and seven oclock in my house. A. has usually served B. is usually served C. is usually serving D. usually served 9. Sperm whale can .............. in all oceans. A. find B. be found C. found D. being found 10. You look so tired, you ..................... take a rest. A. would B. could C. should D. might 11. He ................ by many journalist now. A. is photographing B. is photographed C. photographs D. is being photographed 12. ............... this biodiversity were maintained, marine life would be at stake. A. If B. Although C. Unless D. Because Rewrite the following sentences so that it has the same meaning to the first sentence using the word given 13. We were late, so we missed the train. (If..................................................................... 14. My husband went on business yesterday ( Mary said 15. Study harder or you will get bad marks. ( Unless.. 16. My parents have given me two tickets to the concert. ( I ...................................................................... Complete the following sentences, using the cues below. 17. This house/ be/ build / two years ago. ( 18. You/ feel/ like/ have/ a drink? ( . Choose the letter A, B, C or D that need correction in each of the following questions. 19. She (A) cant gone to work (B) on time (C) because it rains (D) heavily 20. What (A) did you do if they had (B) spoken (C) to you (D) like that? Give the correct form of the word in bracket. 21. The river is highly . for swimmers. (danger) 22. Do you have a . . . .. costume in your country? (nation) Read the passage and answer the questions. The shark is a meat-eating fish and one of the most feared animal of the sea. Scientists identified about 250 species of fish as sharks. These fish live in oceans throughout the world, but they are most common in warm seas. Sharks vary greatly in size and habits. Whale sharks, the largest kind of shark, may grow 60 feet long. A whale shark weighs up to 15 tons, more than twice as much as an African elephant. The smallest shark may measure only 4 inches long and weigh less than 1 ounce. Some kinds of sharks live in the depth of the oceans, but others are found near the surface. Some species live in coastal waters, but others dwell far out at sea. A few species can even live in fresh water. All sharks are carnivores (meat-eaters). Most of them eat live fish, including other sharks. A sharks only natural enemy is a larger shark. Sharks eat their prey whole, or tear off large chunks of flesh. They also feed on dead or dying animals. 23. How many species of sharks are there? -................................................................................ 24. Where do they live? - ................................................................................ 25. Do sharks eat other sharks? - ............................................................................... 26. What does carnivore mean? - ................................................................................ Give the correct form of the verb in bracket. 27. If they (not/go) away, Ill send for the police. 28. He would give me the money if he (have) .. it. 29. If I had seen the movie, I (tell) you about it last night. 30. You should (drink) .. .. . a lot of water every day.

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