Đường từ nhà LAN đến trường dài 2245,1 m .Lan đi học bằng xe đạp, bánh xe đạp có bán kính là 0,325m .Hỏi bánh xe của Lan phải quay bao nhiêu vòng thì tới trường ?

Trong những câu văn sau những câu nào là câu cầu khiến? Đấu hiệu nhận câu cầu khiến đó là gì? a) Ngày mai chúng ta được đi thâm quan nhà máy thủy điện đấy. b) Con đừng lo lắng , mẹ sẽ luôn ở bên con. c) Ồ, hoa nở đẹp quá! d) Hãy đem những chậu hoa này ra ngoài sân sau. e) Bạn cho mình mượn cây bút đi. f) Chúng ta về thôi các bạn ơi. g) Lấy giấy ra làm bài kiểm tra! h) Chúng ta phải ghi nhớ công lao các anh hùng liệt sĩ.

Hãy chứng minh tế bào là đơn vị cấu trúc và chức năng của cơ thể?? Mong m.n giúp đỡ, Cảm ơn!😘😘

f, 3x-2/6 -5 = 3-2(x+7)/4 g,3(x-3)/4+4x-10,5/10=3(x+1)/5+6 Pt bậc nhất một ẩn

Turn these sentences into active voice 1. The Imperial Academy was constructed under Emperor Ly Thanh Tong. 2. The Temple of Literature was found in 1070. 3. Khue Van pavilion is regarded as the symbol of Ha Noi. 4. Lots of souvenirs inside the Temple of Literature are sold. 5. The Temple of Liteature is considered as one of the most important cultural and historic places/ in Viet Nam. 6. Many precious relics are displayed in the Temple of Literature. 7. The Temple of Literature is located in the centre of Ha Noi about 2 kilometres west of Hoan Kiem Lake. 8. The Imperial Academy was used to educate young men for the country. 9. Students at The Imperial Academy are selected from local examinations. 10. In 2010, the 82 Doctors stone tablets were recognized as a memory of the World. 11. The first Doctors' stone tablets were erected in 1484. 12. The Temple of Literature is surrounded by old trees. 13. Minh Mang tomb was started constructing in 1842 and was complete three years later. 14. Papers at the Royal examinations in the past were passed by the King. 15. Chu Van An was invited to become the principal of the Imperial Academy by Emperor Tran Hien Tong. 16. During that period, 2,323 doctors graduated from The Imperial Academy.

Cho 5,4 gam nhôm vào cốc đựng dung dịch H2SO4 loãng có chứa 49 gam H2SO4 thu được sản phẩm là Al2(SO4)3 và khí hidro ( đktc) a) Chất nào còn dư sau phản ứng ? Dư bao nhiêu gam ? b) Tính thể tích khí H2 ? c) Tính khối lượng Al2(SO4)3 ?

Thế nào là thụ tinh? Sự thụ tinh diến ra ở đâu

Câu 2: Nêu nội dung chính trong giai đoạn lịch sử thế giới hiện đại từ 1917 đến 1945 ?

I. Choose the best answer 1. This is the most interesting novel A. I‟ve read B. I had read C. I‟ve never read D. I‟ve ever read 2. I haven‟t seen you . A. since a long time B. for ages C. ages D. for long existence 3. It every day so far this week. A. rained B. has rained C. rains D. is raining 4. I any letter from him yet. A. haven‟t received B. will receive C. don‟t receive D. didn‟t receive 5. We to Da Lat several times. It‟s a foggy city. A. were B. have been C. were being D. had been 6. I haven‟t met him since he school. A. left B. was leaving C. had left D. was left 7. My uncle on this farm since he was 20. A. has worked B. have worked C. worked D. was working 8. He London 2 years ago and I him since then. A. left/ hadn‟t seen B. left/ haven‟t seen C. was living/ haven‟t seen D. left/ didn‟t seen 9. By the time Tom got back, Peter . A. have gone B. went C. will go D. had gone 10. She in Hue for twenty years. A. lives B. has lived C. lived D. will live 11. It was the most exciting film I . A. never saw B. ever saw C. had ever seen D. have ever seal 12. They have been in love with each other they were young. A. while B. until C. for D. since 13. I the money from him yet. A. haven‟t received B. don‟t receive C. will receive D. am receiving 14. They for nearly 50 years. A. marry B. have been married C. married D. will marry 15. How many times there so far? A few times. A. have you been B. would you be C. were you D. had you been 16. It‟s at least a month since Tom. A. I last seen B. I last see C. I have last seen D. I last saw 17. We almost every lesson in this book so far. A. study B. studies C. has studied D. have studied 18. We that television program. A. never watch B. not never watch C. have never watched D. has never watched 19. Up to then, I such a big fire. A. have never seen B. had never seen C. never seen D. never see 20. I her since I a student. A. know/ am B. knew/ was C. have known/ am D. have known/ was 21. get tired of answering the same questions every day? A. Have you ever B. Had you ever C. Do you ever D. Are you ever 22. She working on that manuscript for 2 year now. A. will be B. has been C. had been D. is 23. I there once a long time ago and back since. A. went/have not been B. go/am not C. have gone/was D. was going/had not been 24. In the last hundred years, traveling much easier and more comfortable. A. becomes B. has become C. became D. will become 25. It is raining now. It began raining two hours ago. So it for two hours. A. rains B. is raining C. has rained D. rained 26. Mike is playing chess. How long he ? A. did/play B.is/playing C. has/play D. has/been playing 27. Today is Thursday and she late twice this week. She late yesterday and on Monday. A. is/was B. has been/is C. has been/was D. has been/had been 28. He in the same house since 1975. A. has lived B. is living C. lived D. had lived 29. We him since he married. A. didn‟t see/got B. haven‟t seen/got

Mỗi năm hoa đào nở Lại thấy ông đồ già Bày mực Tàu, giấy đỏ Bên phố đông người qua ………………………. Năm nay đào lại nở Không thấy ông đồ xưa Những người muôn năm cũ Hồn ở đâu bây giờ? 1. Nêu tên tác giả và thể thơ của bài thơ nêu trên. 2. Tại sao ở khổ đầu tác giả viết “ông đồ già” nhưng đến cuối khổ thơ lại viết “ông đồ xưa”? 3. Viết đoạn văn khoảng 10 – 12 câu theo hình thức diễn dịch, phân tích để thấy được nỗi nhớ tiếc ngậm ngùi của nhà thơ đối với cảnh cũ người xưa gắn liền với một nét đẹp văn hóa cổ truyền dân tộc được thể hiện ở khổ cuối cùng của bài thơ Ông đồ . Đoạn văn em viết có sử dụng một câu cảm thán. (Gạch chân và chú thích).