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quynhchido15102002
2 năm trước
Chia hỗn hợp gồm hai ankađien kế tiếp thành hai phần bằng nhau. Đốt cháy hoàn toàn phần I thu được 17,6 gam CO2 và 4,32 gam nước. Phần II dẫn qua dung dịch brôm thì lượng brôm tham gia phản ứng là m gam. Giá trị m là:
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I. Choose the underlined word or phrase (marked A, B, C or D) in each sentence that needs correcting. 1. My sister is very seriously and hard-working in her study. A B C D 2. Ride a bike at the weekend is my best friend's hobby. A B C D 3. She is very cared, so she always helps her mother do the housework. A B C D 4. My friend has a short brown hair and an oval face. A B C D 5. Because Nga is very keen on the school's singing competition, she is taking part A B C on it tomorrow. D 6. I have an important maths exam tomorrow afternoon, so I do a lot of maths A B C exercises at home this evening. D 7. We have a lot of assignments to do. Therefore, we are going to the cinema A B C with you tonight. D 8. I have new pencil, a pencil sharpener and a pencil case. A B C D 9. The painting competition will start at his school on the 17th of October. A B C D 10. She usually plays the piano every Monday evening, but today she watch cartoons A B C D with her younger sister. 11. There are a table, four chairs, two pictures and a vase in the living room. A B C D 12. There aren't a lot of posters in the wall in his bedroom. A B C D 13. My dog has a long tail, big eyes and a yellow fur. A B C D 14. She has a birthday party with a big birthday cake and a lot of candles at home A B C D at present. 15. She is short hair and big eyes A B C D 16. My new friend, Zoe, is very friend and helpful A B C D 17. Tomorrow, John and I is playing basketball with our team A B C D 18. This student are very smart, studious and well-behaved A B C D 19. My mother have an oval face and lovely smile A B C D 20.Would you like going to the movies tonight? A B C D II. There is one mistake in each sentence. Find and correct it. 1. I live in a apartment on Nguyen Trai Street.______________ 2. Listen! Someone knocks at the door.______________ 3. What do you doing tomorrow?______________ 4. There is some new furnitures in the living room.______________ 5. My mother have short curly hair and big blue eyes.______________ 6. He drives very careless and often causes accidents.______________ 7. John usually go shopping with his mother.______________ 8. There is many books on her bookshelves.______________ 9. Would you like drinking tea or coffee?______________ 10. Why don’t you has dinner with us?______________

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