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dangthithuan27062001
2 năm trước
Bài 1:Tìm x,y,z: a,1/5x:3=2/3:0,25 b,x:y=y:2 và x-2y=15 c,x/5=y/6;y/8=z/7 và x+y-x=69 Bài 2:Từ a/b=c/d (a-b#0,c-d#0) chứng minh a+b/a-b=c+d/c-d Bài 3:Ba chi đội 7A,7B,7C tham gia làm kế hoạch nhỏ thu được 180 kg giấy vụn.Biết rằng số giấy vụn của chi đội 7A,7B,7C lần lượt với tỉ lệ 2:3:4.Tính số giấy vụn mà mỗi chi đội thu nhặt được GIÚP VỚI Ạ!!!!
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1. English is ___________ all over the world. A. is spoken B. speak C. is spoke D. speaks 2. You ___________ a present when you go to the party tomorrow night. A. will give B. will given C. are given D. will be given 3. Look! The trees and flowers ________care of by the gardeners. A. are being taken B. taken C. were taken D. is taken 4. A new university ___________ in my town in the near future. A. is built B. will be built C. was built D. has been built 5. Thousands of people ___________ by natural disasters every year. A. are affected B. are affecting C. have affected D. were affected 6. These toys ________ in our country. A. can make B. can be make C. is made D. can be made 7. Nam doesn’t his motorbike today. It ________ right now. A. is repaired B. is being repaired C. is repairing D. is being repair 8. Two new supermarkets ________ in the neighborhood recently. A. has been built B. is being built C. have been built D. has built 9. The wall ____________ before you paint it. A. must be cleaned B. should cleaned C. might been cleaned D. must cleaned 10. My brother ___________ by a dog last night. A. was bite B. was bitten C. is bitten D. bit 11. My room ___________ in the house by her now. A. is being cleaned B. are being cleaned C. will be cleaned D. would be cleaned 12. Tom _____________ by Mary since 10 o'clock. A. has operated B. have operated C. has been operatedD. have been operated 13. Someone ___________ to take his place. A. must be find B. might be find C. should be finds D. must be found 14. That book ______________ by Tom yesterday. A. bought B. is bought C. were bought D. was bought CÁC BẠN GIẢI CHI TIẾT GIÚP MÌNH VS Ạ

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. 11. We are contented with what we do. A. excited about B. satisfied with C. interested in D. disappointed about 12. It often takes him 45 minutes to get ready for work in the afternoon. A. prepare B. finish C. repair D. discuss 13. Doing homework is a student’s daily routine. A. thing one rarely does B. thing one regularly does C. thing one occasionally does D. thing one never does 14. We had a nice chat over a cup of tea. A. formal talk B. informal talk C. serious talk D. long talk 15. We seldom set each other anymore. A. sometimes B. occasionally C. frequently D. rarely Mark the letter A, B, C, or D on your answer sheet to indicate the word(s) OPPOSITE in meaning to the underlined word(s) in each of the following questions. 16. The children won’t very happy until you take them to the amusement park. A. satisfied B. angry C. sad D. wonderful 17. Many students think that English is very difficult to learn. A. easy B. active C. quiet D. intelligent 18. It was a difficult time, but we never gave up hope. A. stopped B. continued C. had D. offered 19. She purchased a number of shares in the company. A. invested B. sold C. exchanged D. bought 20. People are fleeing the area in panic. A. excitement B. fear C. confidence D. danger Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions. 21. He was unqualified and totally . A. experience B. inexperience C. experienced D. inexperienced 22. Air pollution has reached levels in some cities. A. danger B. dangerous C. endanger D. dangerously 23. Could you tell me the ________________time when the meeting begins? A. exact B. exactly C. exactness D. exacting 24. It was the most _________experience of my life. A. frighten B. frightening C. frightened D. frightful 25. We postponed our picnic because it was raining . A. heavy B. heavily C. heaviness D. heaven 26. Are you satisfied your present work?

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