P và Q yêu nhau đã 3 năm. Một lần gặp đi biết D có cảm tình với mình và hơn nữa gia đình rất giàu có B đã quyết định chia tay Q để đến với D. Hiện nay P và Đ đang yêu nhau và họ chuẩn bị làm đám cưới quá đau khổ vì bị bỏ rơi Q chuẩn trí định tìm đến cái chết theo em tình yêu mà em dành cho đi có phải tình yêu chân chính không Tại sao Nếu có thể cho Q một lời khuyên lúc này em sẽ nói gì với Q

Cho một con lắc đơn gồm có sợi dây dài 80 cm và vật nặng có khối lượng 200g. Khi vật đang ở vị trí cân bằng thì truyền cho vật một vận tốc là . Lấy a. Xác định vị trí cực đại mà vật có thể lên tới ?. b. Xác định vận tốc của vật ở vị trí dây lệch với phương thẳng đứng là và lực căng sợi dây khi đó ?. c. Xác định vị trí để vật có vận tốc . Xác định lực căng sợi dây khi đó ?. d. Xác định vận tốc để vật có , lực căng của vật khi đó ?. mọi người giúp e với ạ

20. Don’t forget ……………….. off the lights before going out. A. to turn B. turned C. turning D. turn 21. Every day, I get up early to ………………. morning exercises. A. do B. make C. take D. A & C are correct 22 We can learn more about the undersea thanks ………………………… this invention. A. in B. on C. of D. to 23. The medicines you take only relieve the ________. A. temperature B. cold C. symptoms D. cure 24. Don’t eat this durian. It’s not _________________. a. good b. green c. ripe d. cool 26. ........... is a condition of the body when it is too hot because of illness. A. Cold B. Fever C. Cough D. Flu 27. I’d like _________ by listening to music at breaktime. A. relaxed B. relaxing C. to relax D. relax 28. “I didn’t like the film.” – “ _____________” A. We did, either. B. Neither did we. C. We didn’t, too. D. So did we. 30. I ‘ve got a headache.-................................................ A.You must take some medicine B.You mustn’t stay in bed C.You ought to stay up late D.You shouldn’t take a rest A B C IV. Complete the passage, using the words given in the box any, far, new, years, from, by, live, in, with, motorbike Lan is our (1)______ classmate. She comes (2) _____ Nha Trang. She is (3) ____ class 7A. She is thirteen (4) _____ old. Her parents (5) ______ in Nha Trang. Now she’s living (6) _____ her aunt and uncle in HCM city. Her house is (7) ____ from school. So, she usually goes to school (8)____ bus. a. Cleaning floor day. b. Caution wet floor. c. Wet floor ahead. d. Keeping out of floor 29. Khang and I _________ swim when we were only five years old. A. should B. could C. can D. must IV. Complete the passage, using the words given in the box any, far, new, years, from, by, live, in, with, motorbike Lan is our (1)______ classmate. She comes (2) _____ Nha Trang. She is (3) ____ class 7A. She is thirteen (4) _____ old. Her parents (5) ______ in Nha Trang. Now she’s living (6) _____ her aunt and uncle in HCM city. Her house is (7) ____ from school. So, she usually goes to school (8)____ bus. Sometimes, her aunt takes her to school by (9) _______. She doesn’t have (10) _____ friends. So she feels sad. V. Write in the correct order to have meaningful sentence 1. on/ may/ Lan/ be/ will/ Sunday/ 25th/ 13. …………………………………………………………… 2. Call/ six/ will/ I/ after/ o’ clock/ again/her. …………………………………………………………… 3. speak/ can/?/ I/ Van/ to/ please. …………………………………………………………… 4. you/ free/ morning/ be/ will/ tomorrow/? …………………………………………………………… 5. parents/ Thu/ with/ in/ lives/ Hanoi/ her. ……………………………………………………………

Error Identification. 31.Windsurfing, which is a water sport combining elements of surfing and A B sailing first developed in the United States in 1968 and also called boardsailing. C (was first developed) D 32.The windsurfer stands on a board that is propelled and steering by A B (steered) means of a sail attached to a mast that is articulated at the foot. C D 33.Since 1984 the sport has included in the Olympic Games as part of the A B C D yachting events. (has been included) 34.The sport was became very popular in Europe and by the late 70's A B there was windsurfing fever in Europe with one in every three C households having a sailboard. (became) D 35.The first world championship of windsurfing held in 1973. Windsurfing A B C (was help) first became an Olympic sport in 1984 for men and 1992 for women. D Read the passage carefully and choose the correct answer. There is very little documentation about the origins of water polo. It is known, however, that the sport originated in the rivers and lakes of mid-19th century England as an aquatic version of rugby. Early games used an inflated rubber ball that came from India known as a "pulu" (the single Indian word for all "balls"). Pronounced "polo" by the English, both the game and the ball became known as "water polo." To attract more spectators to swimming exhibitions, the London Swimming Association designed a set of water polo rules for indoor swimming pools in 1870. At first, players scored by planting the ball on the end of the pool with both hands. A favorite trick of the players was to place the five-to-nine inch rubber ball inside their swimming suit and dive under the murky water, they would then appear again as close to the goal as possible. The introduction of the rules by Scottish players changed the nature of water polo. It became a game that emphasized swimming, speed and passing. Scottish rules moved from a rugby variant to a soccer style of play. Goals became a cage of 10x 3 feet and a goal could be scored by being thrown. Players could only be tackled when they "held" the ball and the ball could no longer be taken under water. The small rubber ball was replaced by a leather soccer ball. If the player came up too near the goal, he was promptly jumped on by the goalie, who was permitted to stand on the pool deck. Games were often nothing more than gang fights in the water as players ignored the ball, preferring underwater wrestling matches that usually ended with one man floating to the surface unconscious. Water polo was first played in the USA in 1888. The game featured the old rugby style of play which resembled American football in the water. "American style" water polo became very popular and by the late 1890's was played in such venues as Madison Square Garden and Boston's Mechanics Hall, attracting 14,000 spectators to national championship games. 36.According to the text, _______. a. the origins of water polo are written thoroughly in a lot of documents b. water polo is an aquatic version of rugby c. water polo first appeared somewhere outside England d. people have played water polo since the early 19th century. 37.The present rules of water polo were invented _______. a. by Scottish players b. by Indian players c. the London Swimming Association d. in 1870 38.In water polo, the players score a goal by _______. a. swimming b. passing c. catching d. throwing 39.The present water polo ball is made of _______. a. rubber b. leather c. bone d. wood 40.Water polo became popular in America in _______. a. the middle of the 19th century b. in 1870 c. in 1888 d. by the late 1890's

I. Choose the word that has the underlined part pronounced differently from the others 1. A. graze B. magical C. grandmother D. rag 2. A. brother B. love C. money D. lose 3. A. busy B. much C. but D. under 4. A. inches B. checks C.roofs D. aches 5. A. laughed B. missed C. called D. watched II. Choose the word or phrase that best complete each sentence. 6. Tuan ẹnoys ……….. computer games all day A. play B. to play C. playing D. plays 7. Kate hates …………. to classical music. A. listens B. listened C. listen D. listening 8. Mr. Smith likes ……………to music in his free time. A. listens B. listened C. listen D. listening 9. Lan enjoys …………………. A. draw B. drawing C. to draw D. drew 10. Do you enjoy ....................sports programs? A. watch B. to watch C. watching D. watched 11. Hung is ………….. student in my class. A. good B. better C. the best D. a best 12. Ho Chi Minh City is larger and ……….. beautiful than Hanoi. A. more B. as C. most D. the most 13 . She has bought this dress ………………Saturday A. for B. since C. next D. last 14 . Minh ……………. in this town since 1987 A. is living B. has lived C. lives D. lived 15. The Sun ….in the East . A. rise B. rose C. rises D. rising 16. That boy has short ………….hair A. curly B. oval C. tall D. reserved 17. Alexander Graham Bell …………….. the telephone in 1876 A. invent B. invented C. invents D. is inventing 18. You must cover ………………sockets so that children do not try to put anything into them A. electrical B. dangerous C. safe D. suitable 19. ……………. Was Alexander Graham Bell born? He was born in 1847. A. When B. Where C. Why D. Who 20. Revision is …………… when we learn new words. A. necessary B. necessarily C. more necessary D. unnecessary V. Rewrite the second sentences which have the same meaning with the original ones. 47. “Which way did they go?” he asked. He asked 48. The teacher said the children “You shouldn’t make noise in class.” The teacher said

Viết lại câu như trong hình giúp mình với

Theo em, tại sao Hai Bà Trưng chọn cách tự vẫn?

giúp mình câu B với ạ cảm ơn mn

2. Sự khác nhau giữa software life-cycle và 1 software process model là gì? 3. Tiến trình phần mềm(Software processes) là gì? Có những kiểu mô hình tiến trình chung nào? 4. Trình bày mô hình tiến trình thác nước(waterfall model). Ưu nhược điểm của mô hình? Với những kiểu dựa án nào ta nên sử dụng mô hình thác nước. Hãy giải thích tại sao? 5. Trình bày mô hình tiến trình phát triển tăng dần (incremental development). Ưu nhược điểm của mô hình? Với những kiểu dựa án nào ta nên sử dụng mô hình này. Hãy giải thích tại sao? 6. Trình bày mô hình tiến trình tái sử dụng (reuse-oriented development). Ưu nhược điểm? Với những kiểu dựa án nào ta nên sử dụng mô hình này. 7. Giải thích tại sao phát triển tăng dần là cách tiếp cận hiệu quả nhất để phát triển hệ thống phần mềm kinh doanh (business software systems). Tại sao mô hình này ít phù hợp với coog nghệ hệ thống thời gian thực? ANH CHỊ GIÚP EM VS AK,5*. CÂU TRẢ LỜI HAY NHẤT, 10 ĐIỂM

Câu 1 : Cho ABC cân tại B, có A = 70 độ . Tính số đo B ? Câu 2 : Cho tam giác ABC có AB = 8 cm , AC = 6 cm , BC = 10 cm. a.Tam giác ABC là tam giác gì? Vì sao ? b. Kẻ AH vuông góc với BC . Biết BH = 6,4 cm. Tính AH.