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Xác định các chất A, B, C, E, F, G, H để hoàn thành các phản ứng theo các chuyển hóa sau: FeS + O2 (A) + (B) (A) + O2 (C) (C) + (E) → (F) (F) + (B) → (G) + (E) FeS + (F ) → (I) +(K) (I) + (F) → (G) + (A) + (E) (K) + (A) → (H) + (E)
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Gấp(9) Ex 9. Read the text carefully then choose the correct answers. The island of Okinawa in Japan has some of the oldest people in the world. It’s famous for its high number of centenarians – men and women who live beyond 100 years of age. There have been many scientific studies of their lifestyle and you can even buy cookery books based on their diets. Some of the reasons for their good health are that they … go fishing and eat what they catch. regularly do gardening and grow their own fruit and vegetables. go cycling and never drive when they can walk. often spend time with friends. They meet at people’s houses and play games. rarely buy food from the supermarket. do regular exercise, go swimming and lead active lives. 1. According to the passage, Okiwana is well known for___________ a. its beauty b. its centenarians c. its sub-tropical climate d. its cuisine 2. The people of Okiwana______________. a. cook very well b. eat a lot of meat c. have an unhealthy diet d. have the longest lifespan 3. Which of the followings is NOT true about the Okiwanans? a. they eat what they fish and grow. b. They often buy food at the supermarket. c. They do exercise regularly. d. They enjoy socializing with friends. 4. A centenarian is a person who______________. a. is 100 years old b is almost 100 years old c. is 100 years old or more d. is 100 years old or less 5. The Okiwanans live a long life because ______________. a. they have healthy diets and living habits b. they walk as much as they can c. they love gardening and going fishing d. they only eat fruits and vegetables

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