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sangbadong
2 năm trước
hỗn hợp A chứa Al2O3,Fe3O4, CuO. Hòa tan A trong dd NaOH dư, thu được dd C và chất rắn D. Thêm từ từ dd H2SO4 loãng vào dd C cho đến khi phản ứng kết thúc. Nung D trong ống chứa H2 dư ở nhiệt độ cao được chất rắn E. Hòa tan E trong axit H2SO4 đặc, nóng. Viết các phương trình phản ứng xảy ra
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WRITING For each question, complete the second sentence so that it means the same as the first. Use the word in brackets. You may need to change the word. Circle A, B or C. 31. No mountain in Viet Nam is as high as Fansipan. (HIGHEST) A. Fansipan is highest mountain in Viet Nam B. Fansipan is the highest mountain in Viet Nam C. Fansipan in Viet Nam is the most high mountain 32. No desert is as hot as Sahara. (HOTTEST) A. Sahara is hottest desert. B. It is the hottest desert Sahara. C. Sahara is the hottest desert. 33. The USA is larger than Australia. (SMALL) A. Australia is smaller than the USA. B. the USA is smaller than Australia. C. Australia is small than the USA. 34. The Amazon River is longer than the Mekong River. (SHORT) A. The Mekong River is shorter than the Amazon River B. The Amazon River shorter than the Mekong River is C. The Mekong River is short than the Amazon River 35. There are few people in this area of the country. (CROWDED) A. This area of the country is not very crowd. B. This area of the country is not very crowded. C. This area of the country is crowded. Use the words given to write a completed sentence. Circle A, B or C. 36. The Truong Sa Islands/large/than/The Hoang Sa Islands/. A. The Truong Sa Islands are large than The Hoang Sa Islands. B. The Truong Sa Islands are the larger than The Hoang Sa Islands. C. The Truong Sa Islands are larger than The Hoang Sa Islands. 37. Ayers Rock/the/strange/rock/Australia/. A. Ayers Rock is the strangest rock in Australia. B. Ayers Rock is the stranger rock in Australia. C. Ayers Rock is the strange rock in Australia. 38. Which/high/Fansipan/or/Mount Everest/? A. Which is higher, Fansipan and Mount Everest? B. Which is higher, Fansipan or Mount Everest? C. Which is high, Fansipan or Mount Everest? 39. I think/Phong Nha – Ke Bang National Park /more/wonderful/Cat Tien National Park/. A. I think Phong Nha – Ke Bang National Park is more wonderful than Cat Tien National Park. B. I think Phong Nha – Ke Bang National Park is the more wonderful than Cat Tien National Park. C. I think Phong Nha – Ke Bang National Park is wonderful than Cat Tien National Park. 40. Ha Long Bay/famous/than/Phu Quoc Island/. A. Ha Long Bay is famous than Phu Quoc Island. B. Ha Long Bay is more famous than Phu Quoc Island. C. Ha Long Bay is the more famous than Phu Quoc Island. The end

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