cho t/g ABC can tai A.lay D tren canh AB.duong thang qua D va song song voi BC cat AC o E a) C/M t/g ADE can b) C/m BE=DC c)gia su AB=15cm,BC=18cm.Goi I la trung diem cua BC.tinh do dai AI

Viết pt chuyển hóa: H2O -> H2 -> H2SO4 -> H2 -> H2O -> Ca(OH)2

Are these students the fast ( run)____________ in your school ?

Vì sao cây thông trong rừng cao , cành chỉ tập trung phần ngọn còn cây thông mọc ngoài bìa rừng thân thấp tán lá rộng

nói về 1 bữa tiệc sinh nhật đáng nhớ của em bằng tiếng anh khoảng 10-15 câu

V. Rewrite these sentences, using cleft sentence. She bought the car from Tom. My secretary sent the bill to Mr Harding yesterday. He already plays for national side; he only turned professional last year. The film was made in Bristol. We are coming to stay with Jane this weekend. Columbus sailed to America in 1492. The president makes the important decisions. I'm not looking forward to physics, but I'm most worried about, the statistics exam. She's been seeing a doctor at Newtown Hospital, but she's having the operation in the Queen Mary Hospital.

nhận xét gì về vua quang trung trong cuộc đại phá quân tthanh

Vẽ sơ đồ nguyên lí của mạch điện chiếu sáng sau: -Mạch điện gồm 1 cầu chì,1 công tắc hai cực điều khiển 1 bóng đèn

1 xe câu có công suất là 15kW,để nâng 1 vật nặng 1 tấn lên độ cao 6m.Biết hiệu suất của động cơ là 90% a)tính công có ích của động cơ b)tính thời gian nâng vật

34. Korea was chosen to be of the 2002 Asian Games. A. athlete B. host C. participant D. guest 35. The Olympic Games is one of the biggest sporting all over the world. A. problems B. athletes C. cultures D. events A. enthusiasm B. enthusiast C. enthusiastic D. enthusiastically 36. We are quite of the success of our country at the next Asian Games. A. hope B. hopeful C. hopefully D. hopefulness 37. I do weight training every day to improve the of muscles. A. strong B. strength C. strongly D. strengthen 38. We presented the athletes some flowers as a token of our for all their efforts to achieve. A. appreciate B. appreciation C. appreciated D. appreciative 39. After the opening ceremony, the athletes got ready to start the . A. compete B. competitor C. competition D. competitive 40. is considered to be the most popular, is also my favorite. A. Football which B. Football, that C. Football, which D. Football 41. The football season is the time thousands of football fans crowd into the stadium to watch their favorite teams. A. where B. which C. at that D. when 42. Athletes do their best to win medals to winners as awards. A. which give B. are give C. to give D. given 43. Each country sends its best athletes participation expresses the friendship and solidarity. A. who B. which C. that D. whose 44. The man a black suit is a football referee. A. to wear B. wearing C. who wear D. wears. 45. Fencing was first introduced at the 13th Asian Games, in Bangkok. Thailand in 1998. A. to be held B. holding C. when was held D. which was held 46. He took out a photo of Pélé, he adored. A. whose B. whom C. that D. which 47. The death of his son was an experience from he never fully recovered. A. when B. why C. that D. which 48. They are talking about they are looking at. A. David Beckham is picture B. David Beckham’s picture C. David Beckham, which picture D. David Beckham, whose picture 49. This is a picture in the newspaper of a high jumper leg was seriously hurt. A. who B. whom C. whose D. that