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vua1890
2 năm trước
Một tế bào sinh dục sơ khai của một cá thể đực qua các giai đoạn phát triển từ vùng sinh sản đến vùng chín đòi hỏi môi trường nội bào cung cấp nguyên liệu tương đương với 240 nhiễm sắc thể đơn .Số nhiễm sắc thể đơn có trong một giao tử được tạo ra ở vùng chín gấp đôi số tế bào tham gia vào đợt phân bào cuối cùng tại vùng sinh sản 1. Tính số nhiễm sắc thể đơn mà môi trường nội bào cung cấp cho mỗi giai đoạn của tế bào sinh dục trên 2.Quá trình xảy ra trên cơ thể loài đang xét có sự tham gia của 2 tế bào cùng lúc mỗi tế bào có 2n cromantic a .Quá trình trên tên là gì? xảy ra ở giai đoạn nào? b .Kết quả quá trình trên tạo ra bao nhiêu tế bào con? Mỗi tế bào con có bao nhiêu nhiễm sắc thể
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Change the following sentences into indirect speech:  8h47 sữa bài 1. They said, “I’ve come to discuss important business with you.” 2. They said, “It contains diamonds.” 3. They said, “We found the diamonds in a secret location last week.” 4. They said, “We’re looking for businessmen to invest in the mine.” 5. They said, “We’re happy to invest here and now.” 6. They said, “We’ll take you there tomorrow.” 7. They said, “You can dig for the diamonds yourselves.” 8. "Do you speak English?" 9. "Are you British or American?" 10. "Is it raining?" 11. "Have you got a computer?" 12. "Can you type?" 13. "Did you come by train?" 14. "Have you been to Bristol before?" 15. "Where does Peter live?" 16. "Where are you going?" 17. "Why is she crying?” 18. “How did you go to school yesterday?” 19. “How long have you been staying in Danang?” 20. “What are your friends going to do tomorrow evening?” 21. “What will the weather be like next week?”

II. Read the text carefully, then do the tasks. Holi, known as the festival of colours, is the Hindu festival celebrated by Hindus all over Asia and also by the people from some parts of Europe and North America. It is mainly observed in India and Nepal. Holi commemorates the victory of good over evil, marks the arrival of Spring, and a time to give thanks for the good harvest. The dates change each year according to the full moon, but it is normally in March and sometimes in late February and lasts for a night and a day. Traditional Holi celebrations start the night before Holi with a Holika Dahan where people gather around a bonfire and perform religious rituals praying that evil will be destroyed. The next morning is a free-for-all festival of colours. People chase each other, smear each other with paint, throw coloured paint powder over each other, and drench each other with coloured water. Some people carry water guns and coloured water-filled balloons for their water fight. In the evening, people visit houses of their friends and relatives and share sweets and other food items. A. Decide if the statements are true (T) or false (F). 1. The ‘festival of colours’ is another name for Holi. T 2. Only Hindus celebrate Holi. F 3. Holi is celebrated on 1 March - the first official day of spring. T 4. Holi activities start early in the morning. T 5. The famous festival of colours is the second day of Holi. F 6. Water guns and water-filled balloons are also used to play and colour each other. T B. Answer the questions. . 1. Where is Holi mainly celebrated? ___________________________________________________________ 2. When does Holi take place? ___________________________________________________________ 3. How long does the festival last? ___________________________________________________________ 4. Why is Holi festival celebrated? ___________________________________________________________ 5. How do people celebrate Holika Dahan? ___________________________________________________________ 6. What do people do on the day of Holi? giúp mình với Thu gọn

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