Dòng sông hiện nay bị ngăn lại hai đầu, nước không chảy nữa gọi là

Một chuyển động đều nếu giảm vận tốc 25% thì thời gian phải thay đổi bao nhiêu % để đi được quãng đường gấp rưỡi quãng đường ban đầu?

Choose A, B, C, D for each gap in the following sentences. 1. Air___________, together with littering, is causing many problems in our cities today. A. pollute B. pollution C. polluting D. polluted 2. The road in front of my office is always __________ when it rains heavily. A. to flood B. flooding C. flood D. floodded 3. Singapore is famous for its __________ and green trees. A. cleanliness B. cleanly C. cleaning D. clean 4. In some English speaking countries, turkey and pudding are ___________ food at Christmas. A. national B. historical C. traditional D. possible 5. Recent ………developments have made robots more user-friendly and intelligent. A. science B. scientist C. scientific D. scientifically 6. The roof of the building _____________ in a storm a few days ago. A. damaged B. was damaged C. has damaged D. has been damaged 7. A severe tropical___________ is called a typhoon A. drought B. rain C. flood D. storm 8. Teenagers spend most of their time playing computer games, ………they lost their interests in daily activities. A. moreover B. so C. however D. as a result 9. If I were you, I … do something to prevent him from littering. A. would B. did C. will D. do 10.Earth … by the gravity of the Sun and orbits around it. A. holds B. is held C. is holding D. held 11. By the time we … to the cinema, the film had started. A. gets B. had got C. has got D. got 12. When the policeman came there, the robber … A. had left B. has left C. left D. was left 13. All people who were without homes in the flood were provided with … accommodation. A. short B. temporary C. present D. Instant 14. If you __________ something, you should patent it as quickly as possible. A. invented B. will invent C. have invented D. are inventing 15. When thermal pollution happens, the water temperature in streams, rivers, lakes and oceans ____________________ A. changes B. keeps C. remains D. stays 16. Australia is home to … animals like kangaroos and koalas. A. only B. rare C. unique D. precious 17. If you were the president, what … you do to help the environment? A. will B. did C. would D. do 18.The Maori in New Zealand greet each other by … their noses. A. touching B. punching C. blowing D. rubbing 19. The village’s drinking water_______ with poisonous chemicals since the factory came into operation. A. contaminates B. is contaminated C. has contaminated D. has been contaminated 20. When the policeman came to the scene, the driver of the car … A. have left B. had left C. leaves D. was left 21. Sciences and technology have enormous ______________ on economic development. A. affects B. effects C. affect D. effect 22. I believe that our new manager has the________ to work well in this business environment. A. inflexible B. flexibly C. flexibility D. flexible 23. If the factory __________dumping poison into the lake, all the fish and other aquatic animals will die. A. continues B. continued C. will continue D. continue 24. You will recognize Jenny when you see her. She … a red hat. A. wears B. is wearing C. will wear D. will be wearing 25. The farmer rides the buffalo -____________ carts loaded full of rice home. A. draw B. drawing C. drew D. drawn 26. Little Pascal ……a mechanical calculator which could do additions or subtractions very quickly. A. discovered B. found C. found out D. invented 27. Robots save workers from ____________dangerous tasks. A. making B. having C. performing D. carrying 28. Many people believe that robots have made workers jobless____that is not necessarily true. A. but B. and C. so D. or 31. Science and technology have _____________the life safe, secure and comfortable. A. transformed B. made C. done D. changed 32. The teacher __ me I had better devote more time to science subjects such as physics, chemistry, and biology. A. said B. talked C. spoke D. told 33. Science is used in all corners of the world for the __________ of people. A. interest B. need C. profits D. benefit Giúp mik với đg cần gấp ạ

Vẽ chibi theo tâm trạng của bạn P/S: nay bực không chịu đc :>

. Choose the word that has main stress placed differently from the others: 1. A. unaffected B. undrinkable (ko thể uog) C. uncountable D. unsuitable 2. A. unpopular B. unorganized C. unfortunate D. unambitious 3 . A. impossible B. unnatural C. unrelated D. unbearable 4 . A. unlimited B. undeveloped C. unsuccessful D. unaffected Giúp mình với Đg cần gấp

Mn người giúp em vs e bote 5 sao cho

Cho tình huống sau: Chúng em muốn dc thi đấu môn bóng đá nam và môn bóng chuyền nữ vào dịp 26/3 Hãy viết VB đề nghị cho tình huống trên Làm giúp mik nha, mik cần gấp

Giải dùm mình câu 35 vs ạ (theo tự luận)...mình cảm ơn

“… Người ta kể rằng, có một máy phát điện cỡ lớn của công ti Pho bị hỏng. Một hội đồng gồm nhiều kĩ sư họp 3 tháng liền tìm không ra nguyên nhân. Người ta phải mời đến chuyên gia Xten-mét-xơ. Ông xem xét và làm cho máy hoạt động trở lại. Công ti phải trả cho ông 10.000 đôla. Nhiều người cho Xten-mét-xơ là tham, bắt bí để lấy tiền. Nhưng trong giấy biên nhận, Xten-mét-xơ ghi: “Tiền vạch một đường thẳng là 1 đôla. Tiền tìm ra chỗ để vạch đúng đường ấy giá: 9999 đôla…” (Trích Ngữ văn 9, tập hai, NXB Giáo dục Việt Nam, 2018) 1. Xác định hai phép liên kết được sử dụng trong đoạn trích trên. 2. Ghi lại lời dẫn trực tiếp được tác giả sử dụng trong đoạn trích. Theo em có nên chuyển lời dẫn trực tiếp thành lời dẫn gián tiếp không? Vì sao?

8.Millions of Christmas cards ________ every year. A. is sent B. are sent C. send D. are sending 9.Could you show me how_________ this game. A. play B. played C. playing D. to play 10.We take part ____most of the youth activities of my school. A.in B.on C. to D. for 11.We're looking forward to_________ you soon. A. see B. seeing C. saw D. be seeing 12.He had his father_________ his watch. A. fixed B. to fix C. fix D. fixing 13.Luckily, Peter had ______ to finish his final exam. A. many time B. enough times C. time enough D. enough time 14.Tom_____his hand when he was cooking the dinner. A. burnt B. was burning C. burn D. is burning 15.I promised _________ late again. A. not being B. not to be C. to not be D. not be no 16.Would you mind if I_________ a photo? A.took B. take C. taking D. will take 17.Mary _________ England since 1990. A. visit B. visited C. has visited D. was visiting 18.It is_____to find an expensive hotel in this town. A. difficulties B. difficultly C. difficulty D. difficult 10 câu đc 10 điểm