Cho a, b ∈ $\mathbb{Z}$, b > 0. So sánh hai số hữu tỉ $\dfrac{a}{b}$ và $\dfrac{a+2001}{b+2001}$ Có thể tham khảo trên mạng nhưng giải chi tiết nha

Viết một đoạn văn ngắn ( 5 đến 6 câu ) nêu cảm nhận của em về hình ảnh vai trò của người mẹ đối với con cái qua VB: Cổng trường mở ra

Giúp mik vs mn ơi, cảm ơn trc ạ

Văn bản “Mẹ tôi”: Sau khi đọc bức thư của bố, En-ri-cô đã rất xúc động và viết ngay một bức thư gửi cho bố.Em hãy đóng vai En-ri- cô để hoàn thành bức thư đó

2 phút thôi nha mn ới nếu muôn quá 1 phút thì ko vote đâu

nhanh nhanh giúp mik nha đầy đủ 3 câu giùm mik vs ạ

Quan sát hình vẽ và trả lời câu hỏi: Góc xAy và góc x'Ay' có phải là hai góc đối đỉnh không? Vì sao? * Hình ảnh không có chú thích

hoà tan 0.8g NaOH vào 49.2g nước thu được dd X . Tính C% của chất tan trong dd X

Sau những cuộc phátkiến địa lí Quý tộc và thương nhân ở Châu Âu nhờ đâu mà giàu lên nhanh chóng

11. The two friends (be) ………………… the same class at school 12. She (fly ) ………………… to London after having a meeting tomorrow night 13. He usually (drink) ………………… coffee in the morning, but today he (drink) ………………… tea instead 14. When I was young, I often (spend) ………………… a lot of money 15. He (work ) ………………… for a foreign company at the moment 16. We (not meet) ………………… each other since our school days 17. When I got to the hospital, she (sit) ………………… in the waiting room. 18. Look at those black clouds. It (rain) ………………… 19. We (not eat) ………………… in that restaurant for 2 years 20. My father (fly) ………………… to Rome tomorrow 21. I (read) ………………… that novel several times before 22. They (have) ………………… an anniversary celebration tonight 23. They (not live) ………………… in Washington from 1950 to 1955 24. (Ba / collect) ………………… stamps since January? 25. We now (live) ………………… on 72nd street where we (live) ………………… for two years 26. Smith (leave) ………………… New York last month and (work) ………………… in Chicago since then 27. I (wait) ………………… for you until you (come) ………………… 28. My present teacher (be) ………………… Mr Jones. I (study) ………………… with him for six months 29. My teacher (just / come) ………………… to our class 30. He (leave) ………………… Hue for Ha Noi next week? 31. (They / be) ………………… in Da Lat many times before? 32. We (buy) ………………… this car two years ago and (drive) ………………… it 5000 miles since then 33. Everyday thousands of people (travel) ………………… by motorbike in Vietnam. 34. The film (just / begin) …………………. You are still late 35. He broke his arm while he (play) ………………… rugby 36. Kylie (make) ………………… her first film when she was 21 37. I (work) ………………… on the computer when the earthquake happened 38. I (have) ………………… a bath when she phoned 39. Jame (walk) ………………… through the forest when the storm started 40. I found my pen while I (look ) ………………… for my bag 41. He (break) ………………… his arm when he (play) ………………… tennis 42. The phone (ring) ………………… while An (have) ………………… a bath 43. At 8 o’clock last night, we (watch) ………………… television 44. It suddenly (begin) …………… to rain while Laura (sit) ………………… in the garden 45. When I (see) ………………… them, they (try) ………………… to find a new a house near their work 46. Though she (have) ………… her own house, she (stay) …………… with her parents now 47. He (walk) ………………… along the street when he suddenly (feel) ………………… something hit him in the back 48. Last night I (drop) ………………… a plate when I (do) ………………… up washing. Fortunately it (not break) ………………… 49. That’s the third time he (phone) ………………… her this evening 50. Jim (not be ) ………………… here at the moment 51. Now he (weigh) ………………… 70 kilograms 52. (You / have ) ………………… time to write the lesson? – Yes, I did 53. Yesterday afternoon, my father (fix) ………………… his bicycle while his mother (cook) …………………dinner 54. I learn to swim when I (be) …………… very young. I (teach) …………… by my father 55. My grandfather was a builder. He (build) ………………… this house many years ago 56. They (not have ) ………………… a party in the garden at present 57. I (visit) ………………… the art museum yesterday, I (never, see) ………………… many of Picasso’s paintings before 58. Dennis (smoke) …………… a lot. In fact, whenever I (see) …………… him, he (smoke) …………… 59. At this time yesterday, I my homework ( do ) ………………… 60. Don’t make noise . My father ( listen ) ………………… to the radio 61. I (finish) ………………… everything when you come back. 62. We (live) ………………… in Da Nang since we (be) ………………… ten years old. 63. The students ( play) ………………… soccer in the yard now. 64. They ( know) ………………… each other quite well for ages. 65. I was having dinner last night when he ( come ) ………………… in. ​​ 66. Tom always (drive) ………………… more carefully at night? 67. Why didn’t you listen while I (speak) ………………… to you? 68. My bicycle isn’t here anymore. Somebody (take) ………………… it 69. I hope it (not rain) ………………… when we start early tomorrow. 70. My brother (watch) ………………… TV after he had his dinner.