Giúp em hoàn thành chuỗi này với C2H6->C2H4-> C2H6->CO2->NAHCO3 (1) CH3COONA-> CH4->C->CH4->CH3CL (2) [(2) (C3H6)n [(3) C3H7CL (3) C3H8(1)->C3H6->[(4) C3H6Br2 [(5) C3H6(OH)2

Mọi người giúp em làm bài 3 với ạ

thắng lợi quân sự của ta , ý nghĩa của từng thắng lợi của việt nam hóa chiến tranh

Bài 12. Chọn và điền từ thích hợp để hoàn thành câu dưới đây Must don’t have to might should mustn’t shouldn’t 1.You ______ drive on the paverment. It’s illegal. 2. You _______ say that. It’s not nice. 3. I ________ go to work tomorrow because it’s a public holiday. 4. I _________ buy this CD, I’m not sure. 5. You _________ eat more vegetables. They’re good for you. 6. You _________ be 18 before you can buy alcohol. Bài 13. Hoàn thành các câu dưới đây, sử dụng May(not) và might(not). 1.There are some dark clouds in the sky.(may) 2. It’s nine- thirty and Jack feels tired (might) 3. My class start soon, but I’m not sure where the classroom is (may not) 4. Sarah has soem money and she is at a clothing store( might) 5. Kelly and Jenny are friends but they live in different cities. They are both traveling to Washington this summer(may) 6. It’s cold outside, but James isn’t wearing a jacket( might) 7. My brother is at a restaurant and he feels a little hungry( may) 8. I should go to work today, but I feel a little sick( might not) 9. perhaps Susan know the address.(may) 10. It’s possible that Joanna didn’t receive my message( might)

Làn phải hết đấy , cấn chính xác 100%

Còn bạn nào thức ko giúp mk bài này với! Ngày mai mk phải nộp rồi: VI. Complete the sentences with the correct superlative form of the adjectives in the box: difficult ; beautiful ; delicious ; interesting ; valuable ; boring ; polluted ; amazing 1. Prague is ______________ city I’ve ever seen. 2. What’s ______________ book you’ve ever read? - Harry Potter and the Sorcerer’s Stone. I really love it! 3. The Grand Canyon is ______________ sight I’ve ever seen. 4. Many climbers consider K2 is ______________ mountain to climb, not Mount Everest. 5. That was ______________ movie I’ve ever seen. I almost walked out in the middle. 6. Please give me your recipe. That is ______________ cake I’ve ever eaten. 7. Fresh air doesn’t exist in New Delhi at the moment. It is _________ city on Earth right now. 8. That is ______________ painting in the art gallery. It’s worth a million dollars.

vì sao cần phải phòng tránh HIV/AIDS?

Bài 5. Cho dạng đúng của động từ trong ngoặc ở thì tương lai đơn. 1.What _______ you (do) this evening? 2. I’m a little busy, I ______ (have) time to help you with your homework later though. 3. Mr. Brown _____ ( give) us a grammar test tomorrow. 4. You ____ ( help) your friend after class won’t you? 5. Kyung Sook _____ (cook) something tasty for dinner tonight. Will you try it? 6. Next year, the university ____ (change) its entrance requirements. 7. We ____ ( move) to the new campus in 2010. 8. _____ ( you/ come) camping with our club on Saturday? 9. ______( you/ go) to Cananda for your vacation? 10. Our friends _____ (meet) us in front of the Sears department store. 11. Miss Brown _____ (make) a new list tonight. 12. We ____ (ask) a policeman which road to take. 13. My wife _____ (call) on you tomorrow. 14. I ____ (have) my lunch at twelve o’clock. 15. He ____ (be) here on Wednesday. 16. He ____ (come) at two o’clock tomorrow. 17. The new park ____ (cover) a very great area. 18. We ____ (know) the answer tomorrow. 19. I hope we ____ (meet) him tomorrow. 20. When the thermometer is below zero water _____ ( freeze). 21. We ______ (go ) for a long walk soon. 23. A lift ___ (take ) us to the top floor of the hotel. 24. I am afraid it ____ ( be) quite impossible. 25. I’m sure they _____ (understand) your problem.

Tế bào thị cảm vị giác nằm ở bộ phận nào ?

Mn giúp mình với !!1 Cho tam giác ABC có BC = a, AC = b, AB = c . đẳng thức nào đúng A. S = ab sinC B. bc cos A = b^2 + c^2 - a^2 C. a= R sin A D. 4ma^2 = 2 ( b^2 + c^2) -a^2