-4x^2 - 4x - 2 nhỏ hơn hoặc bằng 0 với x lm cách nào dễ thhooi ms hoc

cho 40g dd NaOH 20% tác dụng với 600g dd Fe2(SO4)3 10%. a)m kết tủa b)C% các chất trong dd sau phản ứng

nhận xét truyện ngắn sống chết mặc bay của phạm duy tốn có ý kiến rằng: sống chết mặc bay đã lên án gay gắt tên quan phủ lòng lang dạ sói và bày tỏ niềm thương cảm trước cảnh nghìn sầu muôn thảm của nhân dân. Em có đồng ý với ý kiến trên không? Vì sao? Hãy trả lời các câu hỏi trên bằng một đoạn văn từ 8 - 10 câu. Trong đoạn văn có sử dụng một câu bị động (gạch chân, chú thích). các bạn không chép trên mạng nhé!!!

Điền từ: 1........icot 2......ridge 3....... acelet 4................. ead 5. incess Giúp em với mn ơi em cần trước 9 h

Cho tam giác ABC vuông tại A a) chứng minh tanB + cosB lớn hơn bằng 2 b) Khi sinB + cosB=căn 2 . Hãy tính góc B c) H là trung điểm AB, đường thẳng qua H vuông góc với BC tại I và cắt tia AC tại K. Chứng minh tan C x tan BKC =2

Những cảnh vật tươi đẹp thường để lại trong ta những cảm xúc khó quên. Hãy viết bài văn (Từ 20 đến 30 dòng) tả lại một cảnh đẹp mà em yêu thích theo quan sát và tưởng tượng của em. Trong đoạn văn có sử dụng một phép so sánh và một từ láy. Gạch chân và chỉ rõ phép so sánh và từ láy đó.

bố hơn con 30 tuổi nếu gấp tuổi con lên 6 lần thì bằng tuổi bố tính tuổi bố và con

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Gỉai thích nha ạ 1. Where ___________you (live)____________? I (live)______________in Hai Duong town. 2. What he (do) _________________now? He (water)_________________flowers in the garden. 3. What _______________she (do)_____________? She (be)______________a teacher. 4. Where _________________you (be) from? 5. At the moment, my sisters (play)____________volleyball and my brother (play) ________________soccer. 6. it is 9.00; my family (watch)___________________TV. 7. In the summer, I usually (go)______________to the park with my friends, and in the spring, we (have) _____________Tet Holiday; I (be)________happy because I always (visit) ______________my granparents. 8. ____________your father (go)_____________to work by bus? 9. How ___________your sister (go)___________to school? 10. What time _____________they (get up)_________________? 11. What ____________they (do)________________in the winter? 12. Today, we (have)______________English class. 13. Her favourite subject (be)__________________English. 14. Now, my brother (like)_________________eating bananas. 15. Look! A man (call)_________________you. 16. Keep silent ! I (listen )____________________to the radio. 17. ______________ you (play)_________________badminton now? 18. Everyday, my father (get up)_______________at 5.00 a.m. 19. Every morning, I (watch)_________________tv at 10.00. 20. Everyday, I (go) __________to school by bike. 21. Every morning, my father (have) ______________a cup of coffe. 22. At the moment, I(read)_______________a book and my brother (watch)_______ TV. 23. Hoa (live)________________in Hanoi, and Ha (live)________________in HCM City. 24. Hung and his friend (play)_______________badminton at the present. 25. They usually (get up)___________________at 6. oo in the morning. 26. Ha never (go)___________fishing in the winter but she always (do)________ it in the summer. 27. My teacher (tell)__________________Hoa about Math at the moment. 28. There (be)____________________ animals in the circus. 29. _______________he (watch)______________TV at 7.00 every morning? 30. What _____________she (do ) _________________at 7.00 am? 31. How old _________she (be)? 32. How ___________she (be)? 33. My children (Go)________________to school by bike. 34. We (go)_______________to supermarket to buy some food. 35. Mr. Hien (go)________________on business to Hanoi every month. 36. Ha (like)______________coffee very much, but I (not like)______________it. 37. She (like )________________Tea, but she (not like)____________________coffee. 38. I (love)_______________ cats, but I (not love)__________________dogs. 39. Everyday, I (go)______________to school on foot. 40. Who you _________________(wait) for Nam? – No, I ___________ (wait) for Mr. Hai.

All / subjects / my/ new/ school/ interesting. * A. All subjects at my new school is interesting. B. All subjects my new school has interesting. C. All subjects of my new school interesting. D. All subjects at my new school are interesting. Mrs. Smith/ travel to work/ motorbike/ every day. * A. Mrs. Smith traveling to work on motorbike every day. B. Mrs. Smith travels to work by motorbike every day. C. Mrs. Smith travel to working in motorbike every day. D. Mrs. Smith travel to work with motorbike every day. Our school has 2000 students. * 1 điểm A. 2000 students are staying in our school. B. Our school is very big. C. There are 2000 students in our school. D. It’s crowded in our school. I’m interested in learning foreign languages. * 1 điểm A. I enjoy learning foreign languages. B. I hate learning foreign languages. C. I don’t like learning foreign languages. D. I am learning foreign languages. We/ ought/ study/ hard/ please/ our parents. * 1 điểm A. We ought to study hard to please our parents. B. We ought studying hard to please our parents. C. We ought to study hard to pleasing our parents. D. We ought to studying hard to please our parents. At present/ Bing/ play tennis/ back yard. * 1 điểm A. At the present, Bing plays tennis in back yard. B. At present, Bing are playing tennis in back yard. C. At present, Bing is playing tennis in the back yard. D. At the present, Bing play tennis in the back yard. compass/ There/ a/ books/ is/ three/ bookshelf/ and/ a/ on the/ pencil. * 1 điểm A. There is three books a pencil, and a compass on the bookshelf. B. There a pencil, a compass, and three books is on the bookshelf. C. There is a pencil and a compass on the three books bookshelf. D. There is a pencil, a compass, and three books on the bookshelf. Helen/ do / this English test/ good / than I do. * 1 điểm A. Helen does this English test gooder than I do. B. Helen does this English test better than I do. C. Helen is doing this English test good than I do. D. Helen do this English test better than I do. free/ He/ most/ time/ sports/ spends/ of/ his/ playing * 1 điểm A. He playing most of time his sports free spends. B. He spends most his free time of playing sports. C. He spends most of his free time playing sports. D. He playing sports most of his free time spends. My/ teacher/ long/ dark/ has/ hair. * 1 điểm A. My teacher has long black hair. B. My teacher has black long hair. C. My teacher has hair black long D. My hair teacher has long black. Let’s/ out/ go/ for/ tonight/ dinner. * 1 điểm A. Let’s dinner out for go tonight. B. Let’s go out for dinner tonight. C. Let’s tonight go out for dinner. D. Let’s out for dinner go tonight.