Cho 5,6 lít (đktc) hỗn hợp khí metan và etilen tác dụng với dung dịch brom dư, lượng brom đã tham gia phản ứng là 16 gam. a. Tính thành phần phần trăm về thể tích của mỗi khí trong hỗn hợp ban đầu. b. Đốt cháy toàn bộ hỗn hợp trên, tính thể tích khí cacbonic thu được và thể tích không khí đã tham gia phản ứng (ở đktc)

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D. WRITING (2.5pts) I. Use the adjectives in brackets in their correct forms of comparison to complete the sentences. (1,0pt) 1/ Some people think that country folk are ………than city people. ( friendly) 2/ Which one is ……………………..…, Red River or Mekong River? (long) II. Rewrite the second sentence so that it has a similar meaning to the first one(1.5 pt) 1. My house is taller than your house. F Your house .……….……….……….……….……….……………………… 2. I love listening to music. F I like …………….……….……….……….……….……….………….………. 3. The black dress is more expensive than the white one. F The white dress ….……….……….……….……….……….………….………. 4. We don’t use oil lamps any more. F We used ……….……….……….…………….……….……….……….………. 5. No one in my group is more intelligent than Mary. F Mary……….……….…….……….……….……….……….………….………. 6.He works much. He feels tired. F The more ………….……….……….……….……….……….………….………. I. Fill the gaps with the words in the box. More than one word can be suitable for some gaps. (2.5pts) festivals celebrate lunar best great time most activity celebrated Spring is the time when there are many (1) _______ in our country. Among them, Hoa Ban festival is the (2)_______ beautiful and interesting, and it takes place in Lai Chau. It is typical of the cultural life of the Thai people. In the second (3) _______ month of the year, when it gets warmer and Hoa Ban – a kind of beautiful flower in the northwest mountainous area - blossoms, Hoa Ban Festival is (4) _______. This is a (5)………………… for everyone, especially for boys and girls. 1. ………… 2 ………… 3. ………… 4. ………… 5…………..