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sbtcchamhoi
2 năm trước
Em thực hiện nhân rồi khai triển qua máy tính Casio của em (Dòng Fx-570VN PLUS thế hệ 2) ra bộ số là: 3992001001. Em biết 3,2,1 là các bậc rồi, 1 là hệ số tự do, nhưng em hỏi các anh chị các số còn lại là sao ạ?
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1. Write your name ________ the top of the page. 2. I like that picture hanging ________ the wall ________ the kitchen. 3. There was an accident ________ the crossroads this morning. 4. I wasn’t sure whether I had come to the right office. There was no name ________ the door. 5. ________ the end of the street there is a path leading to the river. 6. You’ll find the sports results ________ the back page of the newspaper. 7. I wouldn’t like an office job. I couldn’t spend the whole day sitting ________ a desk. 8. My brother lives ________ a small village the south-west of England. 9. The man the police are looking for has a scar ________ his right cheek. 10. Nicola was wearing a silver ring ________ her little finger. 11. It can be dangerous when children play ________ the street. 12. If you walk to the end of the street, you’ll see a small shop ________ the corner. 13. Is Tom ________ this photograph? I can’t find him. 14. My office is ________ the first floor. It’s ________ the left as you come out of the lift. 15. We normally use the front entrance but there’s another entrance ________ the back. 16. Is there anything interesting ________ paper today? 17. I love to look up at the stars ________ the sky at night. 18. When I’m a passenger in a car, I prefer to sit ________ the front. 19. It’s a very small village. You probably won’t find it ________ your map. 20. Paris is ________ the river Seine.

The medical community has been sounding the alarm: America's kids are (26)..... worse physical shape than they were 20 years ago. This is particularly appalling since overweight teens often grow into overweight adults, and (27)..... adults develop more heart disease, diabetes, gout, and arthritis. The New England Journal of Medicine reported that obese teenagers in the top 25 percent of their weight categories have twice the death rate in their 70s as people who were in good shape as teens. Researchers at Memphis State University and the University of Tennessee explored the link several years ago and were startled to find that kids' metabolisms were lower while they were watching television than when they were resting and doing nothing at all! The typical teen now spends almost 30 hours a week in front of the (28).... , while eating high-fat snacks. Great Exercises for Teens: Aerobic exercise is perfect (29).... teens who are independent. Some possibilities include running, in-line skating, cycling, swimming, boxing and (30)..... gymnastics. The American Heart Association suggests that teens should raise their heart rates for 20 minutes without stopping, three or more times a week, although a little muscle soreness can be expected, especially in the initial weeks of a workout program. Question 26: A. in B. on C. at D. with Question 27: A. a B.  C. the D. an Question 28: A. broadcast B. tube C. videos D. radio Question 29: A. to B. with C. for D. about Question 30: A. playing B. going C. taking D. doing

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