user-avatar
Phung123
2 năm trước
Một bể nước hình hộp chữ nhật có chiều dài 2,4 m chiều rộng 1,2 m chiều cao 1 m bể có hai vòi một vòi chảy vào bể mỗi phút 60 lít một vòi chảy ra mỗi phút 12 lít lúc đầu bể không có nước hỏi nếu mở cả hai vòi cùng một lúc thì sau bao lâu bể sẽ đầy?
Thích Trả lời Chia sẻ

Các câu hỏi liên quan

Question 11. We are .................... in learning English. A.interest​B.interesting​​C.intrestingly​D.interested Question 12. He worked very hard, ............ he passed the exam easily. A.and ​B.so​​C.but​​D.because Question 13. It’s raining. ................, Mr Binh has to go to work. A.Because​B.But​​C.Therefore​​D.However Question 14. ______ ask you a question? A. Can I ​B. I can ​​C. Do I can ​ ​D. Will I Question 15. The road to our village ...................... next year. A.will be widen​B.must be widened​ ​C.has to be widen​ ​D.should be widened Question 16. He used to .........full time, but now he is a part- time worker. A.working ​B.worked ​C.work​D.to be worked Question 17: There is nothing _____________ than going swimming in hot weather. A. gooder B. good ​C. better ​D. more goodly Question 18. Many visitors _____________ to Ho Chi Minh's Mausoleum every day. A. come​B. comes​C. is coming ​D. has come Question 19. She said that she ..................learning English with you. A.liked​B.to like​​C.liking​D.like Question 20. If I _____________ taller, I would buy this dress. A. am​B. are​​C. were​D. being Question 21. Smoking can_____________ heart disease. A. lead to​B. create​C. causes​D. due to Question 22. At present they _____________ to New York. A. traveling​B. are travelling​C. travelled​D. to travel Give the correct form of the words to complete the sentence. Question 23. The maple tree is one of the most _____________images of Canada. (ICON) Question 24. English is the ___________language of many countries in the world. (OFFICE) Put the verbs in brackets into the correct form. Question 25,26. Before she (go)________ to bed, she (finish) _____________ her homework. Question 27. Would you mind (close)_____________the window? Question 28. I hate (have)_____________ to get up early on Sunday! Read the passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the question. TELEVISION Television is the most popular form of entertainment in the American household. People of all ages use this medium to entertain themselves for an average of four hours a day. Thus, television has had a tremendous influence on its viewers, especially children. Scientists now say that children can be adversely affected by constantly watching television. This is due to the fact that they participate less in physical activities, spend less time reading and studying, and see a world of violence that can affect their own feelings of security. Câu 29: What is the most popular form of entertainment in the American household? A. Television​B. Physical activities​C. Reading ​D. Studying Câu 30: How many hours a day do the American people spend watching television? A. Over 4 hours ​B. 4 hours ​​C. Under 4 hours​​D. Less 4 hours Câu 31: Has television had a tremendous influence on its viewers, especially children? A. Yes, it have​B. Yes, it has had.​ ​C. Yes, it has.​ ​D. Yes, it had. Câu 32: What does the word “viewers” mean? - Viewers are persons ... A. who sell TV sets.​B. who work at a TV station. C. who watch TV.​D. who participate in a TV programme. Câu 33: Who can be adversely affected by constantly watching television? A. The old.​B. Children.​​C. The young.​D. The viewers. Mark the letter At B, C, or D on your answer sheet to indicate the underlined part that needs correction Question 34. If I were you, I will go jogging every morning. A B C D Question 35. We need eight hundred gram of beef. ​ A​ B​C D Rewrite the sentence without changing it’s meaning. Question 36. Do you know the newcomer’s name?” he asked me. He asked ________________________________________________ Question37. Remember to turn off the fan before leaving the room. Don't ___________________________________________________ Question 38. Alexander G. Bell invented the telephone in 1876. Alexander G. Bell was _____________________________________ Question 39. “Don’t put your legs on the table, Nam”, I said I asked _________________________________________________ Question 40. How about going to the theatre tonight. Let's ______________

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct word(s) for each of the blanks. Throughout the world there are different (1)_______ for people to greet each other. In much of the world, a handshake is the common form of welcoming and greeting someone. In many countries around the Mediterranean Sea a light kiss on the cheek is the appropriate way to welcome friends and family. It can be a very big surprise if you expect (2)_______ hands and get a kiss or a hug instead. At times, it is difficult to tell what sort of greeting (3)_______ is followed. People may bow, wave another's arm or even slap the other person on the back. In some places people just smile, look at (4)_______ face and say nothing. Most people in the world are tolerant of, visitors and don't mind what travelers do that seems wrong as long (5)_______ the visitors are sincere. A big part of the delightfulness of world travel is experiencing different customs. 1. A. methods B. ways C. techniques D. means 2. A. to shake B. shake C. shaking D. to shaking 3. A. habit B. routine C. custom D. tradition 4. A. theirs B. the other's C. each other D. the others 5. A. as B. more C. so D. most Mark the letter A, B, C or D on your answer sheet to indicate the sentence that best combines each pair of sentence in the following questions. 6. He wanted to give the ball a powerful kick. He used the top of his foot. A. He used the top of his foot to give the ball a powerful kick. B. What he wants to do is give the ball a powerful kick and use the top of his foot. C. He gave the ball a powerful kick to use the top of his foot. D. Using the top of his foot, he kicked a powerful ball. 7. The film was interesting. We watched it on TV last weekend. A. The film we watched on TV last weekend was interesting. B. We had never watched a film which was interesting. C. We watched an uninteresting film last weekend. D. The film which we watched it on TV last weekend was interesting. Mark the letter A, B, C, or D on your answer sheet to indicate the word(s) CLOSEST in meaning to the underlined word(s) in each of the following questions. 8. I looked this word up in the dictionary but I couldn't understand it. A. reached and use B. wrote down C. made use of D. found the meaning 9. Over-exploitation of oil will lead to the depletion of this resource. A. repeatation B. reputation C. reduction D. consumption Mark the letter A, B, C or D on your answer sheet to indicate the word whose stress pattern is different. 10. A. entertain B. introduce C. computer D. engineer 11. A. trophy B. become C. meeting D. final

2018 © Loga - Không Ngừng Sáng Tạo - Bùng Cháy Đam Mê
Loga Team