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tranngochatdn
2 năm trước
Chỉ được dùng thêm 1 hoá chất , hãy trình bày phương pháp hoá học nhận biết 6 lọ bị mất nhãn đựng riêng biệt các chất rắn sau: CuO, Fe3O4, Fe, FeO, FeS, Ag2O. Viết Pt
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VI. Chọn câu viết lại đúng nhất với câu cho trước. (1.5 điểm) 1.Have you fed the chickens yet? A. Has somebody fed the chickens yet? B. Have the chickens fed yet? C. Have the chickens been fed yet? D. Have they had the chickens fed yet? 2.Jenny does not play tennis as well as she used to. A. Jenny used to play tennis worse than she does now. B. Jenny used to play tennis as well as she does now. C. Jenny used to play tennis better than she does now. D. Jenny used to play tennis as badly as she does now. 3.He said to the boys, “Please bring me some hot water”. A. He told the boys to bring me some hot water. B. He told the boys please to bring him some hot water. C. He told the boys to bring him some hot water. D. He told the boys bring him some hot water. 4.She said that she couldn’t go out after 8 p.m. A. She said, “I couldn’t go out after 8 p.m”. B. She said, “She can’t go out after 8 p.m”. C. She said, “I can’t go out after 8 p.m”. D. She said, “She couldn’t go out after 8 p.m”. 5.“John, please don’t tell anyone about my new address”, said Mary. A. Mary asked John don’t tell anyone about her new address. B. Mary asked John not to tell anyone about his new address. C. Mary asked John not to tell anyone about her new address. D. Mary asked John don’t tell anyone about his new address. Giup mình với ạ!!! Mình cảm ơn nhiều ạ :3

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