Các bạn giúp mình gấp với ạ Cho a, b là các số thực dương. Tìm giá trị lớn nhất của biểu thức sau: a/2a+b+c + b/a+2b+c + c/a+b+2c xin cảm ơn trước ạ
Your Jokes Are.... I am..... ( Amusing / Amused)
Giúp mik vs mik đang cần gấp Giải các phương trình sau
Bạn nào chỉ mình sẵn tiện cho mình xin fb hỏi thêm nha post trên đây nhiều ảnh k đc T^T
Câu 1(4 điểm) Hãy chỉ ra chất nào là oxit axit, oxit bazơ trong các oxit có công thức hóa học sau: CaO, SO2, N2O5, CuO, P2O3, K2O, Al2O3, CO2. Viết công thức hóa học của các oxit sau: Cacbon monooxit, Natri oxit, Sắt (II) oxit, Đi nitơ oxit. Câu 2 (3 điểm): Đốt cháy hoàn toàn 8,1g nhôm trong bình chứa khí O2. a) Hãy viết phương trình phản ứng xảy ra. b) Tính thể tích khí O2 (ở đktc) đã tham gia phản ứng trên. c) Tính khối lượng oxit tạo thành? …
Cho 4 số nguyên liên tiếp. Hỏi tích của số đầu với số cuối nhỏ hơn tích của hai số giữa bao nhiêu đơn vị.
jup mik bài này với 2. Choose the best option to complete each sentence. Circle A, B, or C. 1. I _________ ride a bicycle when I was a child. A. used to B. use to C. am used to 2. That area _________ have a school. A. use to B. used to C. was used to 3. My father _________ drive to work, but now he does. A. didn’t use to B. didn’t used to C. use not to 4. _________ Jim _________ drive a big car? A. Did/use to B. Does/used to C. Was/used to 5. My uncle _________ a bus driver, but now he has a desk job. A. used to have B. was used to be C. used to be 3. Choose the best option to complete each sentence. Circle A, B, or C. 1. ________ the way to school, I can see a “No parking” sign. A. On B. In C. By 2. His car crashed into the traffic ________. A. signs B. lamps C. lights 3. Go to the end of this street, turn left and take the first ________ on the right. The school is on your left. A. turn B. turning C. turned 4. – What does this road _________ mean? – It means “School ahead”. A. light B. symbol C. sign 5. Can you see the “Speed ________”? You can’t drive fast in this area. A. limit B. decreased C. reduced
Ai giải giúp minhmình với cần gấp ạ chi tiết ạ
THE PRESENT SIMPLE TENSE Ex 1. Give the correct form of the verbs in the brackets 1. He (go)……………………. to school every day. 2. She (come)…………………………from Germany. 3. My parents usually (go)……………………..to work by car. 4. We (watch)……………………………TV every day. 5. He (walk)……………………..to work every day. 6. He (be)…………………..in Ca Mau. 7. They (be)……………….students. 8. She (wash)……………………………her clothes every Sunday. 9. She (study)………………………….English every day. 10. He (want)………………………to become a teacher. 11. She usually (walk)……………………..to school. 12. What time………………..Mary usually (get)……………………up every morning? 13. She (not wash)…………………..her clothes every weekend. 14. They (be)……………….. teachers? 15. It often (not be) ………………………..cold in summer. Ex 2. Give the correct form of the verbs in the brackets 1. I (be) ………………… at school at the weekend. 2. She (not study)…………………………. on Friday. 3. My students (be not) …………………hard working. 4. He (have) ………………… a new haircut today. 5. I usually (have) ………………… breakfast at 7.00. 6. She (live) ………………… in a house? 7. Where your children (be) …………………? 8. My sister (work) ………………… in a bank. 9. Dog (like) ………………… meat. 10. She (live) ………………… in Florida. 11. It (rain) ………………… almost every day in Manchester. 12. We (fly) ………………… to Spain every summer. 13. My mother (fry) ………………… eggs for breakfast every morning. 14. The bank (close) ………………… at four o'clock. 15. John (try) ………………… hard in class, but I (not think) …………………he'll pass. 16. Joly is so smart that she (pass) ………………… every exam without even trying. 17. My life (be)………. so boring. I just (watch) ………………… TV every night. 18. My best friend (write) …………………to me every week. 19. You (speak) ………………… English? 20. She (not live) ………………… in HaiPhong city. 21.They (go) ………………..home from school at 5 p.m 22. My cousin (never do)………………….. housework 23. Your mother (like)……………………fish? 24. Her sisters (chat) ………………………….in their room in the evening. 25. What time your father (go)………………….home from work? 26. Lan (be)…………………….my sister. 27. They (be)………………….. my cousins. 28. I (not be)………………… good at Math. 29. (Be) ………..…..you a teacher? 30. (be) ……………he a good student? 31. (be) …………it a pen? 32. My friends (not be)……………….. friendly. 33. I and Mai (be) ………………friends. 34. It (not be)……………..a table. 35. We (be) ………………students of Yen Vien Secondary School. 36. How old (be) ……………you? 37. How old (be)……………..she? 38. Who (be)……………..they? 39. This (be)…………….a book and these (be)………………..pens. 40. You (be)……………. in class 4A? 42. Where you(live) ………………….? - I (live) ……………… in HCM City. 43. How she (go)……………….. to school every day? 44. Nam (like)………………….. ice cream. 45. I and my mother usually (go)………………to the market on Sunday. 46. When your mother (cook) ……………. every evening ? 47. Your father (work) ……………..in the farm? -Yes, he………………… 48.We (study)……………on Monday? 49. Mai (study)……………….in your class? - No, she …………………. 50. You (speak)………………English? - Yes, I……………………. 51. They (get up)…………..……..at 6 o’clock? 52. How your children (go) ……………..to school every day? 53. He (not live)……………………… in Ho Chi Minh City. 54. Lan (have) ………………….breakfast and (go)……………………to school at 6 a.m. 55. Sometimes, I (play) ……………..….badminton. 56. Every night, we (go) …………………….to bed at 10 p.m. 57. We usually (read)…………………book, (listen)…………………….to music or (watch) …………………TV in the afternoon 58. Do you play games ? - No, I (do/ don’t) 59. Jack’s brother (watches/ watch) TV everyday. 60. We have geography (on/ at) Wednesday. 61. What time does Lan (finish/ finishes) her classes every Friday? 62. Tuan and Hung (listen/ listens) to music after school. 63. Our children (have/ has) dinner at half past five. 64. He (don’t/ doesn’t) have a big breakfast every morning 65. She goes (home/ house) at a quarter past four in the afternoon 66. (Do/ does) your father read newspaper before breakfast? 67. What do your students (do/ does) after school?
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