Tả hình ảnh Lượm trong cuộc gặp gỡ và chuyến đi liên lạ cuối cùng Mong mn giúp đỡ ạ ! Cảm ơn nhiều

cho tam giác ABC , gọi I và K thứ tự là chân đường các đường vuông góc . Kẻ từ A đến các đường phân giác của góc B và C . a) Chứng minh IK // BC . b) tính IK theo các cạnh tam giác ABC

17. I only thought about it the day before the game and have had my heart in my mouth from then on. A. been very composed B. been extremely nervous C. been very tired D. been extremely panic 18. We should husband our resources to make sure we can make it through these hard times. A. keep up B. manage C. use up D. marry Choose the best answer from A, B, C or D to indicate the most suitable response to complete the following exchange. 19. Linh is going to hold her birthday party at home this Sunday, so she wants to invite some of her friends to attend the party. Linh: “I would like to invite you to my party this Sunday evening.” Huy: "…” A. Thank you for you offer, but I think it is unnecessary. B. I would love to come but I have prior commitments. I’m sorry. C. I am sorry. Can you come to my place? D. How about going to the cinema? 20. The teacher is talking to Laura about her presentation in class today. Techer: “Your speech this morning was beyond my expectations.” Laura: “…” A. Thanks. Without your help, I couldn’t have B. Are you kidding me? It’s terrible B. It’s OK. It was the least I could do D. That’s alright. I’m glad I could help II. Read Football, or soccer in the U.S, dates back to 2500 B.C. with the Chinese game of tsu chu. The sport we know today originated from Britain. Today, more than 120 million players over the globe participate in the game, making soccer the world's sport. So, why is soccer so popular? Maybe it’s the feeling that the team on the field is your team; their win is your victory, and their loss is your defeat. Or maybe it is the game’s international quality. In countries like France, England, Spain, Brazil, major teams have players from many different nations, and these clubs now have fans all over the world. Or perhaps it’s the promise of great wealth. A number of professional soccer players, including Cameroon's Samuel Eto'o and Portugal's Cristiano Rolnado, come from poor families. Today, both of these players make millions of euros every year. However, ultimately, the main reason for its universal appeal may be this: It's a simple game. It can be played anywhere with anything - a ball, a can, or even some bags tied together. And anyone can play it. In mid-1800s, European colonists brought the game to Africa. Early matches were first played in the South African cities of Cape Town in 1862. Today, some of the game's best players come from African nations and all over the continent, thousands of soccer academies now recruit boys from poorer cities and towns to play the game. Their dream is to join a national team or one of the big clubs in Europe someday. For some, the dream comes true, but for most, it doesn’t. 1. What is the main topic of the passage? A. How African soccer began B. The history of soccer C. The popularity of soccer D. Soccer clubs 2: According to the passage, where did the sport football or soccer that we know today originate from? A. Britain B. America C. Portugal D. China 3. In the second paragraph, which of these is NOT given as a possible reason for soccer's popularity? A. The possibility of earning more money B. The number of soccer games shown on TV C. Well-known players from many different countries D. The team spirit among players 4. What does the author mean by "lt's a simple game" in paragraph 3? A. The rules are not difficult for people to understand. B. You can play it anywhere with anything. C. There are many local versions of soccer. D. You need to have the ability to play soccer well. 5. What does the word “some” in the last sentence of paragraph 4 refer to? A. cities and towns B. poor boys C. national teams D. big clubs

Hãy giải bài toán trên bằng cách khác (gọi x là số phần công việc làm trong một ngày của đội A; y là số phần công việc làm trong một ngày của đội B). Em có nhận xét gì về cách giải này ?

Có 20 ô tô gồm 3 loại: loại 4 bánh chở được 6 tấn, loại 6 bánh chở được 10 tấn và loại 8 bánh chở được 10 tấn. 20 xe đó có tất cả 130 bánh và chở được tất cả 184 tấn hàng. Hỏi mỗi loại có bao nhiêu xe?

viết một đoạn văn nói về nhân vật quan phụ mẫu trg bài sống chết mặc bay

Cho 1 ống nghiệm .1 bình hình trụ chia độ 1 cốc nước 1 cốc dầu nhờn . Mô tả cách xác định khối lượng riêng của dầu nhờn

㏒ $\frac{75}{15}$ theo a= ㏒ $\frac{3}{5}$

I. Choose the best answer from A, B, C or D to complete the following sentences. 1. Her full name is Tran Thanh Hang so her …………… name is Tran. A. first B. middle C. last D. full 2. …………… they’ve already made their decision, there’s nothing much we can do. A. Seeing that B. On grounds that C. Assuming that D. For reason that 3. ……………, the town does not get much of an ocean breeze. A. Locating near the coast B. Despite location near the coast C. Though located near the coast D. In spite having location near the coast 4. Is that the man …………….? A. whom you lent the money B. whom did you lend the money C. you lent the money D. you lent the money to 5. I’m going on business for a week, so I’ll be leaving everything …………… . A. on you guards B. up to your eyes C. in your capable hands D. under the care of you 6. Everyone here has been to London, …………… ? A. haven’t they B. hasn’t he C. hasn’t they D. has he 7. It …………… rains whenever I go out without my umbrella. A. continually B. invariably C. typically D. infallibly 8. It’s a serious operation for a woman as old as my grandmother. She’s very frail. I hope she …………… . A. gets on B. comes round C. pulls through D. stands up 9. I know that she has tried hard; …………… that as it may, her work is just not good enough. A. come B. be C. should D. must 10. No matter what happens Susan never shows her emotions. She always keeps a stiff upper …………… . A. mouth B. eye C. head D. lip 11. Olivia is still the only student …………… the first prize four times for the best design. A. to be awarding B. being awarded C. to have been awarded D. to have awarded 12. When his alarm went off, he shut it off and slept for …………… 15 minutes. A. other B. others C. another D. the others 13. I don’t think that TV viewers like that film, …………… ? A. don’t I B. do I C. don’t they D. do they 14. He was …………… disappointed at the result of the exam. A. bitterly B. strongly C. heavily D. seriously Choose the best answer from A, B, C, or D to indicate the phrase CLOSEST in meaning to the underlined one in the following sentences. 15. A lot of superstitious practice in a country can be a major impediment to its economic development. A. obstacle B. assistance C. impetus D. encouragement 16. Extroverts tend to be gregarious and amiable. They gain energy from rubbing shoulders with others. A. spending time socially with B. making fun of C. staying away from D. engaging in arguments with

cho tam giác ABC cân tại A , cho trung tuyến AM và trung tuyến BN . Chứng Minh MN//AB