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lethanhlong17012004
2 năm trước
uh... vẽ cho mik một cô gái liên kêt với xương rồng tô màu nha không kí viêt trên đầu dòng chữ "love you"+tim hộ mik
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Sulfurbornite là một loại khoáng vật chứa sắt, đồng và lưu huỳnh CTHH có dạng CuxFeySz. Để tiến hành phân tích mẫu quặng người ta làm như sau: QT1: Đem m(g) mẫu quặng nghiền nhỏ sau đó đem oxi hoá hoàn toàn trong oxi khô, khí sinh ra dẫn qua bình dung dịch kiềm NaOH đặc để giữ lại SO2. Sau phản ứng thấy bình tăng 6,144g và còn lại m1(g) chất rắn. QT2: Dẫn khí hidro qua m1(g) chất rắn, khống chế ở 250 độ C để Fe2O3 chuyển về Fe3O4, CuO chuyển về Cu. Sau phản ứng thu được 9,536g hỗn hợp rắn. Đem toàn bộ hỗn hợp cho vào HCl dư sau phản ứng còn lại 7,68g chất rắn không phản ứng. Xác định khối lượng m, m1 và CTHH của sulfurbornite.

V- Supply the correct form and tense of the verbs in the brackets. 21. She doesn’t want (go) ____________. 22. Keep silent, please. Our teacher (explain)___________the lesson. 23. Would you like (have)___________breakfast with eggs, children? 24. It (rain) ____________. As soon as the rain (stop) __________, I’ll walk downtown. 25. How much it (cost) _____________to mail a letter to England? VI- This passage contains five errors. Each line has only one, underline them then correct. (0) is done as an example. Ex: Nowadays, football become one of the world’s. 0. ______becomes_____ 26. most popular games. Millions of people play and 1. __________________ 27. watch it all around a world. A football match 2. __________________ 28. often has two parts. Each part are forty-five minutes. 3. __________________ 29. The first part is the first half and the two part 4. __________________ 30. is the second half. There is a fifteen-minutes break 5. __________________

II. Chuyển các câu sau sang bị động. (Khi tân ngữ gián tiếp làm chủ ngữ trong câu bị động: BỎ giới từ TO/FOR) 1. Henry saved some pizza for me. Some pizza was saved for me by Peter. I was saved some pizza by Peter. 2. Hannah gave the pens to him. The pens ________________________________________ 3. Leslie bought ice cream for us. We__________________________________________ 4. Carla told her secret to everyone. Her secret________________________________________ 5. Laura sent a gift to her boyfriend. Laura’s boyfriend________________________________________ 6. Christy caused trouble for me. I___________________________________________ 7. Lola opened the bottle for us. The bottle___________________________________________ 8. Chris built sand castles for his brother. His brother___________________________________ 9. Paul sent his wife a letter. A letter ___________________________________ Paul’s wife _______________________________________ 10. I’m donating money to charity. Money___________________________________________ 11, Laura will give some cake to Peter. Some cake__________________________________________ Peter_________________________________________________ 12. They have written her a postcard. She A postcard 13. We bought Bettysome butter. _________________________________________________

I. Xác định từ loại của nhũng từ/ cụm từ gạch chân + Tân ngữ trực tiếp : DO + Tân ngữ gián tiếp: IO + Chủ ngữ: S + Động từ : V 1. Mike rode his skateboard. 2. Anna sent Mary a note. 3. Uncle John bought Daddy a new tie. 4. The police sent them a notice. 5. The campers built a fire. 6. The dog chased the boys down the street. 7. Can you get Joanne some tickets to the party? 8. Catch the ball! 9. Be careful! You’re going to hit the wall! 10. We gave her roses on her birthday. 11. They showed us the door. 12. We bought Mom and Dad a new car. 13. The Smiths invited the neighbors. 14. This washing machine saved me hours of work. 15. They soldus their house. 16. Mom cooked the chicken. 17. The company didn’t pay them their salary. 18. Winnie told us his plans for the summer holiday. 19. Cindy took her dogto the park. 20. The teacher asked me an important question.

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