Ta có: $\frac{x-y}{x+y}$ = $\frac{3}{4}$
⇔ 4(x - y) = 3(x + y)
⇔ 4x - 4y = 3x + 3y
⇔ 4x - 3x = 3y + 4y
⇒ x = 7y
⇔ $\frac{x}{y}$ = 7
I. Choose the word which has the underlined part pronounced differently from the others. 1. A. image B. manage C. shortage D. temperature 2. A. quizzes B. changes C. hopes D. watches II. Choose the words that is different from the rest in each group. 3. A. tree B. restaurant C. grass D. flower 4. A. store B. museum C. friend D. hospital III. Choose the word or phrase (A, B, C or D) that best completes the sentence. 5. On Monday, we have a _________ English test. A. forty five-minutes B. forty five-minute C. forty five minutes D. forty five minute 6. You should put the food in a reusable box _________ plastic bag. A. by B. instead of C. because of D. without 7. Don’t forget _________ the light before leaving the room. A. turn off B. turning off C. to turn off D. not to turn off 8. I’d like _________this letter to Ha Noi. A. to send B. sending C. send D. sends 9. Don't forget to buy five _________ of bread! A. bottles B. loaves C. cans D. bars 10. He _________ with his friends in an apartment in Ho Chi Minh City since he_________. A. is living/ came B. has lived/ came C. lived/ came D. lives/ comes 11. _________ silly mistake! A. What B. How C. What a D. How a 12. “How is your sister now, Suzy?” - “She is _________” A. more much worried B. much worried more C. much more worried D. more much worry IV. Supply the correct form of the words in brackets. 13. Mr Vinh is a ________________ teacher. (HUMOUR) 14. There are many ________________ people after the earthquake. (HOME) 15. Are you sure that boys are more ________________ than girls? (ACT) 16. Don’t worry. The police will give you ________________ (DIRECT) IV. Fill each gap of the following sentences with a suitable preposition. 17. Women’s Day is _______________ May 8th. 18. I dreamt about my old friend from school mid night last weeek 19. We might go camping but it all depends _______________the weather. VI. Each of the following sentences has one mistake. Identify the mistakes 20. Charles does like his father with curly fair hair. A B C D 21. There are much students in my class. A B C D 22. Let’s playing computer games now. A B C D VII. Choose the word or phrase among A, B, C or D that best fits the blank space in the following passage. I live in a small village called Northville. There are about 2000 people here. I love the village (23) _________ it is very quiet and life is slow and easy. The village is always clean; people look (24) _________ it with great care. The air is always clean, too. People are much friendlier here than in a city because everyone (25) _________ the others, and if someone has a problem, there are always people who can help. There are only a few things that I don't like about Northville. One thing is that we have not got many things to do in the evening; we haven't got (26) _________ cinemas or theaters. The other thing is that people always talk about (27) _________, and everyone knows what everyone is doing. But I still prefer village life to life in a big city. 23. A. so B. although C. because D. but 24. A. for B. at C. up D. after 25. A. knows B. know C. is knowing D. knew 26. A. little B. some C. any D. few 27. A. others B. other C. another D. one another VIII. Read this passage carefully then choose the best answer to each question below. A TWENTY YEAR- STOLEN BICYCLE Ted Robinson has been worried all the week. Last Tuesday he received a letter from the local police. In the letter the police asked him to meet them at the police station. Ted wondered why the police wanted him, but he went to the station yesterday and now he is not worried any more. At the station he was told by a smiling policeman that they found his bicycle. Five days ago, the policeman told him, the bicycle was picked up in a small village four hundred miles away. They are now sending his bicycle to his home by train. Ted was most surprised when he heard the news. He was amused too, because he never expected the bicycle to be found. It was stolen twenty years ago when Ted was a boy of fifteen. 28. Ted was worried because ____________. A. He received a letter B. He went to police station yesterday C. The police would catch him D. He didn’t know why the police wanted him. 29. The police who talked to Ted was ___________. A. pleasant B. worried C. surprised D. small 30. What did the policeman tell him? A. His bicycle was lost. B. His bicycle was found five days ago. C. He was very surprised. D. He never expected the bicycle to be found. 31. Why was Ted very surprised when he heard the news? A. Because his bicycle was stolen 20 years ago B. Because his bicycle was found when he was a boy of fifteen. C. Because the bicycle was sent to him by train D. Because he thought he would never find the bicycle. 32. Which of the following statements is NOT true? A. The police asked Ted to go to their station. B. Ted is no longer anxious. C. The policeman told Ted the good news yesterday. D. Ted is 25 years old now.
Lớp có 18 nam và 24 nữ. Có thể chia lớp đó thành mấy tổ để số nam và số nữ được chia đều vào các tổ. Khi đó mỗi tổ có mấy nam? Mấy nữ?
.Read the passage again and answer the following questions. The Maori arrived in New Zealand from other Polynesian islands over a thousand years ago. They were the first people to live there. They made beautiful wooden buildings with pictures cut into the wood. There are about 280,000 Maori today. Maori have brown skin, dark brown eyes and wavy black hair. In 1840, they agreed to become British colony, and they learned European ways quickly. Today, there are Maori in all kinds of jobs. They attend schools and universities and become lawyers and scientists. There are Maori in the government. Most of them live like the white New Zealand. However, the Maori do not forget their traditions. Children learn the language, music and old stories. They have yearly competitions in speaking, dancing, and singing. The Maori live a comfortable, modern life, but they keep their traditions by passing them to their children. 1. Did the Maori come from Polynesian islands? ->…………………..……………………………………………………………………………………. 2. How many Maori are there today? ->…………………..…………………………………………………………………………………… 3. What do the Maori look like? ->…………………..……………………………………………………………………………………. 4. What do they do at their yearly competitions? ->…………………..……………………………………………………………………………………. 5. Do the Maori live comfortable life? ->…………………..…………………………………………………………………………………….
Tại sao con đom đóm trong bài thơ Anh đom đóm được xem là con vật được nhân hóa.
Dịch tiếng việt giúp mình ( phần khoanh tròn ) Dịch hết
Đề bài : Em đã từng chứng kiến cảnh bão lụt ở quê mình hoặc xem cảnh đó trên truyền hình , hãy viết một bài văn miêu tả trận bão lụt khủng khiếp đó . Chú ý : Ko chép mạng ( mình đã đọc tất cả các bài đó rồi )
2(7x-1/6 +2x) = |1- 2x |(7x-1/6 +2x ) cái này là phân số nha mn / đúng vote 5s cảm ơn nhiều
Phân tích đa thức thành nhân tử x^6-1
Bài thơ “Mùa xuân nho nhỏ” cho ta thấy niềm mong muốn được sống có ích, cống hiến cho đời là một lẽ tự nhiên như con chim mang đến tiếng hót, bông hoa toả hương sắc cho đời của Thanh Hải. Trong bài “Một khúc ca xuân”, Tố Hữu cũng có những suy ngẫm tương tự: “Sống là cho đâu chỉ nhận riêng mình”. Bằng một đoạn văn quy nạp khoảng 12- 15 câu, trình bày ý kiến của em về quan niệm sống nói trên trong câu thơ của Tố Hữu. GIÚP MÌNH VỚI NHÉ...MÌNH CẢM ƠN
Giải nghĩa từ tiều phu, cho biết xét về nguồn gốc thì từ này thuộc loại từ gì
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