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Câu 8. Hỗn hợp khí A gồm oxi và ozon có tỉ khối so với hiđro là 19,2. Tính % thể tích của các khí trong A? Câu 9. Hỗn hợp khí A gồm oxi và ozon có tỉ khối so với He là 9. Tính % thể tích của các khí trong A?
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Read the following passage and choose the best answers to each of the questions below. I’m in the hospital! I’ve broken my leg! But don’t worry. I’ll be all right. I’ve been here since last Sunday. I had an accident at a football match. I tried to kick the ball but I kicked the goal post! The pain was quite bad, so Dad brought me to the hospital the same day. I had a small operation three days ago. The nurses and doctors have been really nice, but the food’s disgusting. I prefer Mum’s cooking! goal post (n) cột khung thành /operation (n) ca phẫu thuật Where is the writer? A. He’s going on a vacation. B. He’s at home. C. He’s in hospital. D. He’s at school. What has happened to him? A. He has had a cold. B. He has broken his leg. C. He has had an accident. D. b & c are correct He felt _________pain. A. no B. not much C. a lot of D. a&b are correct What does the word ‘disgusting’ in line 4 mean? A. delicious B. good C. healthy D. awful Which of the following is NOT true? A. The writer has broken his leg because he kicked the goal post. B. He was brought to the hospital last Sunday. C. He doesn’t like the nurses and the doctors there. D. He had a small operation and he will be all right.

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