Cho tam giác ABC. Hãy xác định điểm M thỏa mãn điều kiện: vectơ MA - vectơ MB - vectơ MC = vectơ 0. (có vẽ hình minh họa

2x(x-1)-(x+3)(2x-3)=-1 Giúp mình với Cần gấp trong hôm nay

giúp mình với mọi người oie huhuhu

ai giúp mình với cái thanh taskar của mình thỉnh thoảng vẫn hay bị đơ hoặc bị treo

21. After he ____________ his English course, he went to England to continue his study. A. finish B. finishes C. finished D. had finished 22. Angelina Jolie is a famous actress. She ________ in several films. A. appears B. is appearing C. appeared D. has appeared 23. Mai____ in HCM for five years. A. lives B. has lived C. is living D. was living 24. My little sister________ "sleeping beauty" several times. A. watches B. is watching C. has watched D. watched 25. I ______ to New York three times this year. A. have been B. was C. were D. had been 26. I ______ her since I _____ a student. A. know/ am B. knew/ was C. have known/ am D. have known/ was 27. The train _____ when we got to the station. A. just left B. just leaves C. had just left D. will leave 28. Her father ______ when she was a small girl. A. dies B. died C. has died D. had died 29. Almost everyone _______ for home by the time we arrived. A. leave B. left C. leaves D. had left 30. I ______ to the same barber since last year. A. am going B. have been going C. go D. had gone B. Choose the underlined part among A, B,C or D that needs correcting. 31. When I walk past the park, I saw some children play football. A B C D 32. After John eaten dinner, he wrote several letters and went to bed. A B C D 33. What did you do at 9 o'clock last night? I phoned you but nobody answered. A B C D 34. When I arrived at the station, the train has already left. A B C D 35. Ann and Susan have known each other during they were at school. A B C D 36. She has disappeared three days ago, and they are still looking for her now. A B C D 37. After Mrs. Wang had returned to her house from work, she was cooking dinner A B C D 38. It’s the first time I saw this film A B C D 39. After he graduates from university, he joined the army. A B C D 40. Up to now, there had been no woman being chosen the US president. A B C D C. Choose one sentence that best rewrites the sentence given. 41. They last visited me five years ago. A. They haven't visited me for a long time. C. I haven't been visited for a long time. B. They have known me for five years. D. They haven't visited me for five years.

TESTc. Choose the best answer among A, B, C or D to complete each sentence. 1. He was writing to his friend when he __________a noise. A. was hearing B. heard C. had heard D. hears 2. I __________many people since I came here in June. A. met B. has met C. was meeting D. have met 3. We __________ maths at this time last week. A. were learning B. are learning C. was learning D. learnt 4. She was playing games while he __________a football match. A. watched B. watches C. was watching D. watching 5. She __________to Ho Chi Minh city last year. A. goes B. has gone C. go D. went 6. Since we came here, we ______ a lot of acquaintances. A. have had B. had C. have D. are having 7. __________he playing football now? A. Will B. Does C. Was D. Is 8. Every morning, I often sit in my garden and____ to my nightingale sing. A. listening B. listen C. listened D. listens 9. She __________school when she was six. A. start B. started C. has started D. are starting 10. I. __________TV when the telephone rang. A. watched B. was watching C. are watching D. have watched 11. She__________ lunch by the time we arrived. A. had finished B. finished C. have finished D. finishing 12. This record-shop__________ be a book-shop a few years ago. A. used to B. use C. used D. used 13. I couldn't come to the party because I __________go to work. A. have B. had to C. have got D. had 14. Yesterday, I _______ for work late because I _______ to set my alarm. A. had left / forgot B. was leaving / was forgetting C. left / had forgot D. had been leaving / would forget 15. By the time we ____ to the train station, Susan _____ for us for more than two hours. A. will get / has been waiting B. got / was waiting C. got / had been waiting D. get / will wait 16. While her brother was in the army, Sarah ___________ to him twice a week. A. was writing B. wrote C. has written D. had written 17. The Titanic _______ the Atlantic when it _______ an iceberg. A. was crossing / struck B. had crossed / was striking C. crossed / had struck D. is crossing / strikes 18. In the 19th century, it _______ two or three months to cross North America by covered wagon. A. took B. had taken C. had taken D. was taking 19. Last night at this time, they _______ the same thing. She ______ and he ¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬_________ the Newspaper. A. are not doing / is cooking / is reading B. were not doing / was cooking / was reading C. was not doing / has cooked / is reading D. had not done / was cooking /read 20. When I _____ home last night, I ____that Jane ______ a beautiful candlelight dinner. A. had arrived / discovered / prepared B. was arriving / had discovered / was preparing C. have arrived / was discovering / had prepared D. arrived / discovered / was preparing

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Thế nào là giọng la thứ ? Giọng la thứ hòa thanh khác với giọng la thứ tự nhiên ở chỗ nào? Thế nào là giọng song song ? Giọng cùng tiến ?

I. ĐỌC HIỂU (3,0 điểm) Đọc văn bản sau và trả lời các câu hỏi: Trong dòng đời vội vã có nhiều người dường như đã quên đi tình nghĩa giữa người với người. Nhưng đã là cuộc đời thì đâu phải chỉ trải đầy hoa hồng, đâu phải ai sinh ra cũng có được cuộc sống giàu sang, có được gia đình hạnh phúc toàn diện mà còn đó nhiều mảnh đời đau thương, bất hạnh cần chúng ta sẻ chia, giúp đỡ. Chúng ta đâu chỉ sống riêng cho mình, mà còn phải biết quan tâm tới những người khác. (Đó chính là sự “cho” và “nhận” trong cuộc đời này) “Cho” và “nhận” là hai khái niệm tưởng chừng như đơn giản nhưng số người có thể cân bằng được nó lại chỉ đếm được trên đầu ngón tay. Ai cũng có thể nói “Những ai biết yêu thương sẽ sống tốt đẹp hơn” hay “Đúng thế, cho đi là hạnh phúc hơn nhận về”. Nhưng tự bản thân mình, ta đã làm được những gì ngoài lời nói? Cho nên, giữa nói và làm lại là hai chuyện hoàn toàn khác nhau. Hạnh phúc mà bạn nhận được khi cho đi chỉ thật sự đến khi bạn cho đi mà không nghĩ ngợi đến lợi ích của chính bản thân mình. Đâu phải ai cũng quên mình vì người khác. Nhưng xin đừng quá chú trọng đến cái tôi của chính bản thân mình. Xin hãy sống vì mọi người để cuộc sống không đơn điệu và để trái tim cỏ những nhịp đập yêu thương. Cuộc sống này có qua nhiều điều bất ngờ nhưng cái quan trọng nhất thực sự tồn tại là tình yêu thương. Sống không chỉ là nhận mà còn phải biết cho đi. Chính lúc ta cho đi nhiều nhất lại là lúc ta được nhận lại nhiều nhất. (Trích Lời khuyên cuộc sống) CÂU 1: Xác định phương thức biểu đạt chính của đoạn trích. (0,5 điểm) CÂU 2: Nêu nội dung chính của văn bản. (0,5 điểm)

giúp mình với, mình sẽ cho 5 sao + ctlhn