đáp án:
Do not have to
CHÚC BẠN HỌC TỐT:)
Câu1: Hai người đi xe đạp trên quãng đường AB. Người thứ nhất đi từ A đến B, cùng lúc đó người thứ hai đi từ B đến A với vận tốc bằng 3/4 vận tốc của người thứ nhất. Sau 2 giờ thì hai người gặp nhau. Hỏi mỗi người đi hết quãng đường AB trong bao lâu. Câu 2: Một máy bơm muốn bơm đầy nước vào bể chứa trong thời gian quy định thì mỗi giờ phải bơm được 6m3. Sau khi được 1/5 dung tích bể chứa thì máy bơm chạy với công suất lớn hơn, mỗi giờ bơm được 9m3, do đó hoàn thành trước 1h20’ so với quy định. Tính dung tích của bể. Câu 3:Tìm hai số u và v biết: u+v=1; uv=-42 và u>v giúp mình vs
Anh chị giúp em bài tin này với ạ...
Điều kiện tiên quyết để đất nước tiến lên chủ nghĩa hội là: A Tự do. B Độc lập. C Dân chủ. D Độc lập và thống nhất.
. Read the passage carefully and choose the best answer Energy is fundamental to human beings, especially to poor people- the one- third of humanity that does not have modern energy supplies like electricity, with which their life could be improved. Many people who live in countryside have to gather fuel wood. This takes a lot of time. Moreover, it causes indoor air pollution because of heavy smoke. For many people living in rural areas in developing countries of the world, biogas is the largest energy resources available and costs almost nothing. The main use of biogas is for cooking and heating. As biogas is smoke- free. It helps solve the problem of indoor air pollution. Moreover, plant waste and animal manure cost almost nothing. The tendency to use renewable energy sources is on the increase when non- renewable ones are running out. In the near future, people in the developing countries may use wind or sea waves as the environment- friendly energy sources. 1- Poor people’s life would be better, if they had ________. A. wood B. electricity C. coal D. petrol 2- Using fuel wood ________. A. saves a lot of time B. reduces heavy smoke C. causes pollution D. takes a lot of money 3- Which is not an advantage of using biogas A. smoke- free B. clean to the environment C. costly D. available 4- The tendency to use renewable energy sources ________. A. goes up B. fluctuates C. goes down D. levels 2. Read the passage carefully and choose the correct answer. The Asian Games owes its origins to small Asian multi-sport competitions. The Far Eastern Championship Games were created to show unity and cooperation among three nations: Japan, the Philippines and China. The first games were held in Manila, the Philippines in 1931. Other Asian nations participated after it was organized. After World War II, a number of Asian countries became independent. Many of the new independent Asian countries wanted to use a new type of competition where Asian dominance should not be shown by violence and should be strengthened by mutual understanding. In August 1948, during the 14th Olympic Game in London, Indian representative Guru Dutt Sondhi proposed to sports leaders of the Asian teams the idea of having discussions about holding the Asian Games. They agreed to form the Asian Athletic Federation. A preparatory was set up to draft the charter for the Asian amateur athletic federation. In February, 1949, the Asian athletic federation was formed and used the name Asian Games Federation. It was formed and used the name Asian Games Federation. It was decided to hold the first Asian Games in 1951 in New Delhi the capital of India. They added that the Asian Games would be regularly held once every four years. 5. The text is about ……………………. . A. the origin of the Asian Games B. the Far Eastern Championship Games C. the Games in Manila D. the relationship of Japan, the Philippines, and China 6. The Far Eastern Championship Games …………………………. A. were held in Manila after World War II B. were held in Japan C. were attended by all countries in Asia D. had the participation of only three nations 7. The 14th Olympic Games took place ……………………. A. in 1913 B. in August 1948 C. before the World War II D. In February 1949 8. The Asian Games ……………………………. A. were suggested establishing by a Londoner B. were first held in China C. were first held in India D. were held in the same year of the 14th Olympic Games 9. The Asian Games were first held in ……………………………... A. 1931 B. 1941 C. 1948 D. 1951 GIÚP MÌNH VỚI Ạ, MÌNH CẦN GẤP
Dàn ý bài văn từ văn bản chiếu dời đô em hãy viết một đoạn văn nêu suy nghĩ của em về vai trò của người lãnh đạo Anh minh
MN ƠI GIÚP MK VS ( KO SPAM NHA ) III. Chọn đáp án đúng. 1.I would have visited you before if there _____ quite a lot of people in your house. A. Hadn’t. B. Hadn’t been. C. Wouldn’t be D. Was. 2. If you had caught the bus, you _____ late for work. A. Wouldn’t have been. B. Would have been. C. Wouldn’t be. D. Would be. 3. If I _____. I would express my feelings. A. Were asked. B. Would ask. C. Had been asked. D. Asked. 4. If _____ as I told her, she would have succeeded. A. She has done. B. She had done. C. She does. D. She did. 5. Will you be angry if I _____ your pocket dictionary? A. Stole. B. Have stolen. C. Were to steal. D. Steal. 6. You made a mistake by telling her a lie. It _____ better if you _____ to her. A. Would have been/ hadn’t lied. B. Would be/ didn’t lie. C. Will be/ don’t lie. D. Would be/ hadn’t lied. 7. John would be taking a great risk if he _____ his money in that business. A. Would invest. B. Invested. C. Had invested. D. Invests. 8. She wouldn’t have given them all that money if we _____ her to. A. Wouldn’t advise. B. Won’t advise. C. Hadn’t advised. D. Didn’t advised. 9. If the tree hadn’t been so high, he _____ it up to take his kite down. A. Could have climbed. B. Climb. C. Is climbing. D. Climbed. 10. If the wall weren’t so high, he _____ it up to take his ball down. A. Climbed. B. Could climb. C. Is climbing. D. Climb. 11. If I _____ her phone number, I _____ her last night. A. Had known/could have phoned. B. Knew/ would have phoned. C. Know/ can phone. D. Knew/ could phone. 12. If he _____ the truth, the police wouldn’t arrest him. A. Tells. B. Told. C. Had told. D. Would tell. 13. If you press that button what _____ ? A. Would happen. B. Would have happened. C. Will happen. D. Happen. 14. She says if she _____ that the traffic lights were red she _____. A. Had realized/ would stop. B. Realized/ could have stopped. C. Has realized/ stopped. D. Has realized/ would have stopped. 15. I am very thin, Ithink, if I _____ smoking, Imight get fat. A. Stop. B. Had stopped. C. Will stop. D. Stopped. 16. If I _____ that yesterday, I _____ them. A. Had discovered/ would inform. B. Had discovered/ would have informed. C. Hasd discovered/ could inform. D. Discovered/ can inform. 17. If you _____ to the course regularly, they _____ a certificate last year. A. Go/ gave. B. Go/ give. C.Had gone/ would have given. D. Wen/ would give. 18. I think he is not at home. If he _____ in, he _____ the phone. A. Was/ answered. B. Were/ would answer. C. Were/ would have answered. D. Had been/ would have answered. 19. If I _____ in London now, I couldn’t visit Bristish Museum. A. Were. B. Had been. C. Have been. D. would be. 20. If Columbus _____ money from Queen Isabella, he _____ across the Atlantic. A. Do not receive/ could not sail. B. Had not received/ might not have sailed. C. Did not receive/ might not have sailed. D. Would not receive/ might not sail.
Câu 1. Tại sao chim cánh cụt lại sống được ở nơi có nhiệt độ rất thấp? Câu 2. Nhóm chim bơi có đặc điểm gì đặc biệt so với nhóm chim chạy? mình cần gấp nha mn
1.hãy cho biết vì sao trong đoạn kết nhà thơ lại viết : ( trong bài thơ đêm nay bác ko ngủ ) Đêm nay Bác không ngủ Vì một lẽ thường tình Bác là Hồ Chí Minh 2. Nhà thơ đã hình dung ,miêu tả chuyến đi liên lạc cuối cùng và sự hi sinh của Lượm như thế nào ? Hình ảm Lượm gợi cho em cảm xúc gì ? ( Trong bài thơ Lượm )
Các cậu giúp mk vs ạ mk đg cần rất gấp
cho 5,6g sắt tác dụng với dung dịch axi clohidric loãng thu được bao nhiêu mililít khí H2 ?
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