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2 năm trước
Câu 6 và câu 7 luôn ạ em cảm ơn
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4.Một gen nhân đôi 5 lần đã cần môi trường cung cấp 31000 nuclêôtit loại A và 24800 nuclêôtit loại G. Theo lí thuyết, gen có bao nhiêu nuclêôtit loại A? A. 1000. B. 2100. C. 600. D. 900. 5.Một gen có chiều dài 408nm và số nuclêôtit loại A chiếm 20% tổng số nuclêôtit l của gen. Trên mạch 1 của gen có 200T và số nuclêôtit loại G chiếm 15% tổng số nuclêôtit của mạch. Có bao nhiêu phát biểu sau đây đúng? I. Tỉ lệ G1/A1 = 9/14. II. Tỉ lệ (G1+T1)/(A1+X1) = 23/57. III. Tỉ lệ (A1+T1)/(G1+X1) = 3/2 . IV. Tỉ lệ (T+G)/(A+X) = 1. A. 2 B. 3 C. 4 D. 1 6.Một gen có 90 chu kì xoắn và số nuclêôtit loại guanin (loại G) chiếm 35%. Số nucleotit loại A của gen là A. 357. B. 442. C. 170. D. 270. 7.Gen được cấu tạo bởi loại đơn phân nào sau đây? A. Axit amin. B. Nucleotit. C. Glucozơ. D. Vitamin. 8.Một gen có tổng số 2100 nucleotit và số nucleotit loại A chiếm 20% tổng số nucleotit của gen. Gen nhân đôi 3 lần. Số nucleotit loại G mà môi trường cung cấp là bao nhiêu? A. 4410. B. 630. C. 2940. D. 420.

1. He is carrying out a research on how people spend their money for clothes. → A research 2. Although I had all the necessary qualifications, they didn’t offer me the job. → Despite 3. “Please do not litter as you are walking along the coast”, the guard said to us. → The guard told 4. I haven’t bought any clothes since my trip to Hanoi. → The last time 5. They think that a garden would be a perfect setting for the house. → It 6. Jack’s parents made him study a lot for the entrance exam to high school. → Jack was 7. You can’t register for a course abroad if you don’t have a passport. → Unless 8. “Why don’t we visit the Royal Citadel first?” Quang said. → Quang suggested that 9. People expect that he will join the company soon. → He 10. Shall we use Perfume Pagoda as a theme of the presentation? → She suggests

After only 50 minute flying from Ho Chi Minh City, you will set foot on the tropical paradise of Vietnam and the world: PhuQuoc Island. The island has a roughly triangular shape with a north-south length of 50km and a west-east width of 25km. A great part of the terrain is filled with beautiful sandy beaches, but there is a mountainous region with 99 peaks, among which the Peak of Chua Mountain is the tallest one at 603 meters. Due to PhuQuoc’s location in the Gulf of Thailand, its climate is sub-equatorial with a temperate weather all year round, making trips to PhuQuoc possible any time in the year. However, the best time to travel to this island is during the dry season, from November until March, when the sky is blue and clear and the rains are away. PhuQuoc is most famous for its the cuisines and a natural wonderful coastline. The most famous food of PhuQuoc is fish sauce, which has become quite popular all over Vietnam and the world. Besides, another thing worth trying there is the spicy yet interesting black pepper. However, the factor that will definitely intrigue you to visit PhuQuoc is its untouched coastline featuring several heavenly beaches. They have yet to be explored to their full ability, but this fact might be actually positive as it gives the shores a romantic beauty that you can find in nowhere else in the world. 1. What is PhuQuoc Island regarded as? a. Pearl of the Orient b. Tropical Paradise c. City of Eternal Spring d. Lanterns Paradise 2. According to the passage, PhuQuoc Island . a. has both beaches and mountains b. doesn’t have much tourist attraction c. has the tallest mountain in Vietnam d. doesn’t have rains all the year round 3. Tourists can visit PhuQuoc anytime in the year thanks to . a. its location by the sea b. its friendly local people c. its temperate climate d. its dry season 4. What are PhuQuoc’sspecialities? a. red pepper and fish sauce b. black pepper and dried fish c. red pepper and soya sauce d. spicy black pepper and fish sauce 5. The word “intrigue” has the closest meaning to . a. attract b. promote c. inspire d. pay attention to 6. Which of the following statements is NOT true? a. PhuQuoc Island is located in the Gulf of Thailand. b.The beaches in PhuQuoc Island have been explored to their full potentials. c.PhuQuoc’s dry season begins from November and lasts through March. d.The island is roughly triangular in shape.

1. The limestone formation of Thien Duong Cave is more than that of PhongNha Cave. a. spectacular b.probable c. geological d. sight-seeing 2. During PerfumePagoda festival, alarge number of flocktothe pagodatopray for happiness and prosperity in the coming year. a. spectators b.passengers c. pilgrims d. travellers 3. In the 17th century, the Viet people the temple tower, calling it Thien Y ThanhMau Tower. a. put on b. looked for c. got into d. took over 4. The police caught the thief the corner of Cascade and Plum Streets. a. under b. at c. on d. in 5. He suggests that they should adopt a different way of bringing uptheir children. a. parents b. for parents c. toward parents d. to parents 6. If there is a mechanical problem, we suggest the manufacturer directly. a. contact b. to contact c. contacting d. to contacting 7. It is that the best time to visit Hanoi is September. a. believed b.worth c.rumored d. wondered 8. It that Po Nagar Cham Towers were built in the 8th century. a. considered b.was considered c. has considered d. considers 9. I suggest you Ha Long Bay. It’s very picturesque. a. to visit b.visiting c.visited d. should visit 10. A: You really must go to Hoi An to enjoy the full moon at Mid-autumn Festival. B: . a. Yes, that’s what I’ve heard. b. Do you really know about it? c. Yes, I won’t go there. d. No, thank you. 11. “Watch out, boy!” It means ……………… A. Look up, boy! B. Be careless, boy! C. Be carefully, boy! D. Be careful, boy! 12. The scenery is ……………… when viewed from the mountain top. It feels like your breath is being taken away. A. spectacular B. good C. nice D. peaceful 13. We used ……………… the kites when we were small. A. to fly B. fly C. flew D. flying 14. …………… by the sea, the country has the advantage of having a large coastal area. A. Stood B. Located C. Locating D. Situating 15. I love it when we go to see plays, and try to ……………… when we get back home. A. act B. play C. act them out D. role-play 16. ……………… I was talking to my teacher, my friends were waiting for me outside the classroom. A. While B. Although C. In order that D. Meanwhile 17. It is important to decide if promotion should be based on merit or ……………… A. seniority B. year C. gender D. weight 18. “What’s the best way to get around Hoi An town?” - “ ……………… “ A. That’s useful B. It’s worth seeing C. Great, thanks D. I suggest walking 19. She turned ……………… the new job in New York because she didn’t want to move. A. on B. down C. off D. up 20. This city has one of the most ……………… underground rail networks in the world. A. efficient B. fashionable C. cosmopolitan D. fascinated

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