cho tam giác ABC bên ngoài tam giác ABC kẻ các hình bh : ABIF BCPQ CRS . Chứng n=minh vecto RR +vecto IQ + vecto PS= vecto 0
Vẽ anime có full màu nha Có tên ng vẽ
các bạn làm hooj mình nha ko cần làm hết đâu,hết càng tốt
Choose a word/phrase from the list and use it in the correct form to complete each sentence. Deplete/ Pollute /Access Destroy /Erode/ Contaminate 41. The increase in cases of skin cancer has been recorded in parallel with ozone layer ________________. 42. Intensive pesticide and fertilizer sprays used in agriculture have resulted in the serious ______________ of water, soil and air. 43. The ______________ of this river has been proved by scientists to be caused by the dumping of untreated sewage. 44. Scientists are able to explain the consequences of habitat ____________________ now. 45. Every year about 15,000 acres of fertile topsoil are washed away in Haiti, which has resulted in massive soil ___________. Choose a word/phrase from the list to complete each sentence. properly /ancestors /customs feminist /ritual /favorable 46. My parents lay food on the altar for my _________ on a regular basis because they perceive that they will enjoy the meal with my family. 47. I’m interested in learning more about the ____________ of other countries. 48. Getting down on your knee is a ___________ to honor the dead in this country. 49. As a rule of thumb, several superstitious people choose a ________ date before starting something. 50. Before travelling to England, you have to learn to use knives, forks and spoons _______. 51. Yesterday she went for a picnic with her family. So she _________ at home when you came. A. can’t have been B. mustn’t have been C. needn’t have been D. might not have been 52. Some UFO sightings ________ easily. No one is able to explain them easily. A. can’t be explained B. shouldn’t be explained C. must be explained D. needn’t be explained 53. Like many women, she loves ________ parties and ________gifts. A. the/ a B. a/the C. a/a D. x/x 54. I am on night duty. When you go to ________ bed, I go to ________ work. A. a/x B. a/the C. the/x D. x/x 55. ____.the time passes, ___ I feel! The deadline of my thesis is coming, but I have just finished half of it. A. The faster / the nervous B. The more fast / the nervous C. The fast / the more nervous D. The faster / the more nervous 56. Bill is _________ A. lazier and lazier B. more and more lazy C. lazier and more lazy D. more lazy and lazier Fill the gaps with the correct form of the words in brackets. 57. He was made ( hand )___________over all of his property. 58. By the time they reached the summit, they were ____________ (exhaust). 59. I find her ___________ (exhaust) – she never stops talking. 60. As I _______ (cross) the street, I _______ (step) on some ice and _______ (slip) and ________ (fall). 61. I __________ (walk) home while somebody __________ (follow) me. Correct the mistakes in the following sentences: 62. Lan (A) should seriously consider (B) to become a singer. She’s (C) a great (D) talent. 63. There are lots of (A) amused ways (B) to volunteer in the arts such as teaching, (C) designing and assisting with (D) a variety of arts and crafts. 64. It (A) took them (B) at least two months (C) learning how (D) to pronounce these words. Rewrite these sentences, keeping the meaning. 65. I often ate a lot of cream when I was a boy. (used to) ………………………………………………………………………………………. 66. Hurry up or you’ll be late for school. (conditional sentence) ………………………………………………………………………………………. 67. She has just made this dress. (Passive voice) ………………………………………………………………………………………. 68. Let’s go to the cinema tonight. (v-ing) ………………………………………………………………………………………. 69. My sister couldn’t go for a picnic because she was ill. (so) ………………………………………………………………………………………. Rewrite the following sentences using words in brackets. 70. My lawyer said I shouldn’t say anything to the police. (ADVISED) ………………………………………………………………………………………. 71. When you phoned me, it was my lunch time. (HAVING) ………………………………………………………………………………………. 72. Mary didn’t find it difficult to pass her driving test. (DIFFICULTY) ……………………………………………………………………………………
Cho ΔABC,đường trung tuyến BD và CE cắt nhau tại G.Gọi I;K lần lượt là trung điểm của GB và GC. Chứng minh: a)EDKI là hình thang b)EI//DK; EI=DK
tìm x biết 1.(x-3)^3 -(x-3)(x^2+3x+9)+9(x+1)^2=15 2.x(x-5)(x+5)-(x+2)(x^2-2x+4)=3 3.(x+4)(x^2-4x+16)-x(x-5)(x+5)=264 4.(x-2)^3-(x-2)(x^2+2x+4)+6(x-2)(x+2)=60 5.(5x-1)^2-(5x-4)(5x+4)=7
giúp em bài này với ạ, cần giải thích cụ thể,
các bạn làm hộ mình bài này nha ko cần làm hết đâu
giúp mình cả 2 bài luôn nha T^T
Fill in the blank with a suitable word (with the first letter given) to complete each of the following sentences. 11. In AC____________, special thin needles are put in different pressure points all over the body. 12. Please read the safety PRE___. If you have any questions, please check with your doctor. 13. You can only get this medicine on PRES_______. 14. Fantasia Barrino, the winner of American Idol’s season 3 in 2004, releases her D________. A__________ Free Yourself, which earned three Grammy Award nominations. 15. Most Quan Ho songs have the theme Love with romantic and sentimental LY________ which have been passed on by words of mouth. Reorder the words to complete the sentences. 16. More and more pliaonpatic ________________ are being created for computers, laptops, smartphones or tablets in order for students to make the best use of them. 17. Most young people today are ―dalitgi ________________ natives‖. In other words, they are familiar with computers and the Internet from an early age. 18. The advantage of the smaller tablets is its greater rlitabitypo ________________. 19. In the past, the salporop ________________ and engagement ceremonies took place one or two years before the wedding. 20. The Western people are very concerned with physical tracattiessven ________________ when choosing a wife or husband. Choose from the list the word that is CLOSEST in meaning to the underlined word in each question. multipurpose/ easily carried/ death renowned/ amuse/ influences 21. This robot is very (versatile), as it can be used to perform many different tasks. 22. The laptop's compact design makes it extremely (portable) and practical. 23. To (entertain) tourists, we have to change our usual foods to suit their tastes or adapt dances and traditions to suit their needs. 24. Ecotourism activities have had some negative (impacts) on the environment and people in the area. 25. Hunting animals may lead to their (extinction). Choose from the list the word that is OPPOSITE in meaning to the underlined word in each question. economical/ few /keeping/ intact useless/ starting/ place/ reluctantly 26. A smartphone is too (costly) for him to even have a normal one. 27. A digital camera is (convenient) as it is quick to view and delete as well as easy to transfer photos to a computer. 28. The 19th century brought us (numerous) important inventions, from the telegraph to the automobile to the typewriter to aspirin. 29. The island is very much in favor as a holiday (destination). 30. How many people can visit the Galapagos Islands off the coast of Ecuador without (affecting) the ecological balance? Use the correct form of the words to complete the sentences. 31. The petrol _______ of this type of motorbike is estimated approximately 2 liters per 100 km. (consume) 32. Since then, Velcro has gradually become a familiar _____for shoes, jackets and even spacesuits. (fast) 33. Studies have shown that _____________for inventions mostly come from natural world. (inspire) 34. University students are willing to get involved in helping the old and ___________ people. (child) 35. Most of the students in that special school are making good progress, but Michael is a _________ case. (hope) Use the correct form of the words to complete the sentences. 36. ___________ and individual rights are highly respected in some countries. (INDIVIDUAL) 37. In order to eliminate gender inequality, domestic __________ need to be shared by both husbands and wives. (RESPOND) 38. It is hard to get rid of______________ completely. (POOR) 39. She had to face______________ when she lived far from home. (LONELY) 40. This university is ranked as one the most successful institutions which have made ________ progress in gender equality. (CONSIDER)
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