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loga1356
2 năm trước
tin học 9 làm cách python nha Một chú Kangaroo muốn đi thăm một người bạn trên cùng tuyến đường cách đó một khoảng n (đơn vị dm). Kangaroo chỉ có hai cách di chuyển, một là nhảy ngắn a (đơn vị dm), hai là nhảy dài b (đơn vị dm). Hỏi chú Kangaroo cần nhảy ít nhất bao nhiêu bước nhảy để đến được nhà người bạn (phải nhảy vừa đủ, không nhảy quá nhà bạn) cảm ơn ạ
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Câu 1: He earns a living running a carpentry workshop. A. local B. location C. located D. locality Câu 2:Factories and offices should be built in areas only. A. rural B. coastal C. cultural D. urbanLife in the city is totally different from the rural life. The city - life has both sides good as well as bad. First comes before the bad side. The evils of city life begin from its vast population. There is crowd everywhere. The growing industrial development attracts rural people. They flock to the city to seek jobs and enjoy the city life. Lot of population creates problems of accommodation. People live in congested houses in limited space. Colonies of buildings and skyscrapers are raised at random without any systematic planning. The water - supply falls short. The smoke from the industry and innumerable factories pollutes the air. People breath only smoke. They work round the clock. They are always in a hurry and worry. No greenery, no nature, no open air, no trees, no birds, no time to stand and stare. Can city - life be pleasant? True, the city offers its citizens many up - to - date modern comforts and facilities. One can get best education from primary to the university level. One gets variety of books from big libraries. There are many good educational aids like cultural centers, technical schools, museums, art - galleries, etc. For recreation, there are parks with many toys. For amusement, there are cinemas and plays. One can get the best medical facilities in a city. There are good means of transport and big markets. Câu 3. What does “evils” in the first paragraph mean? A. negative sides of a thing B. many people living in the city C. a mysterious force that causes bad things to happen D. the development of industries in urban areas. Câu 4. Why do people flock to urban areas? A. There are more job opportunities and modern facilities. B. There are many kinds of accommodation available. C. There is a lot of space for people to live and work. D. There are many buildings and skyscrapers. Câu 5. Which of the following is not a problem of city life? A. People are always busy. B. The environment is polluted. C. People live in spacious houses. D. There is a shortage of water. Câu 6. Education facilities do not include A. schools B. plays C. libraries D. museums Câu 7. What can be people in the city do to entertain? A. stand and stare B. breathe the air C. go to the market D. go to the cinema Câu 8:The South of England is drier than the North. A. There is not as much rain in the south of England as in the North. B. There is not as dry in the North of England as in the South. C. It is not so dry in the South of England as in the North. D. There are more rains in the North of England as in the South. Câu 9:We couldn’t go out because the weather was so bad. A. It was so bad a weather that we couldn’t go out. VOTE 5 SAO + TLHN NHƯNG GIẢI THÍCH Ạ B. It was such a bad weather that we couldn’t go out. C. It was so bad weather that we couldn’t go out. D. It was such bad weather that we couldn’t go out.

Câu 11. Tổng hệ số của các chất trong PTHH của phản ứng sau là bao nhiêu? MnO2 + HCI MnCl2 + Cl2 + H₂O C. 8. A. 6. B. 7. Câu 12. Chất nào sau tồn tại ở trạng thái lỏng trong điều kiện thường? A. Cacbon. B. Brom. C. Hidro. D. 9. D. Lưu huỳnh. Câu 13. Dãy phi kim nào sau được sắp xếp theo thứ tự giảm dần mức độ hoạt động hoá học? A. F, Cl, Br, I. B. F, Br, Cl, I. C. I, Br, Cl, F. D. Cl, Br, I, F. Câu 14. Các ngành sản xuất đồ gốm, thủy tinh, xi măng là ngành công nghiệp từ những hợp chất thiên nhiên của nguyên tố X. Nguyên tố X là B. cacbon. C. lưu huỳnh. D. photpho. A. silic. Câu 15. Dẫn 11,2 lít khí CO (ở đktc) qua ống sứ nung nóng chứa 23,2 gam Fe3O4. Sau khi phản ứng xảy ra hoàn toàn khối lượng sắt thu được là C. 22,4 gam. D. 11,2 gam. A. 16,8 gam. B. 12,6 gam. Câu 16. Chất X là một chất khí có màu vàng lục, mùi hắc, nặng hơn không khí và là một khí độc. D. khí CO. Chất X là A. khí Ck. B. khí SO2. C. khí O2.

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