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2 năm trước
Đốt cháy hoàn toàn một ancol đơn chức A thu được 44 gam CO2 và 27 gam nước. a. Xác định công thức phân tử, công thức cấu tạo và gọi tên của A. b. Oxi hóa không hoàn toàn A bằng CuO đun nóng. Viết phương trình hóa học của phản ứng
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II. Put the correct form of the verb in brackets. (Chia dạng đúng của động từ trong ngoặc) 1.Quang Hai footballer (play) ___________________ soccer beautifully last Saturday. 2.He (go) _____goes_______to the English club every Sunday. But last Sunday he (not go) ________ there, he went to the City’s museum. 3. What about (donate) _____________________ blood? - OK. 4.What you (do) ____________ yesterday morning? 5.We (travel) ______________________ to Hue next month. 6.My mother (not like) ______________________ riding a motorbike. 7.When my father was young, he (drink) _____________________ a lot of beer. 8. You (do) ______________________your homework yet? 9.Be careful ! The car (come) ______________________ . 10.My mother (go) ______________________ to the supermarket yesterday evening. 11.Nam usually ( go) _____________________ to school by bike. 12.My father used to (go) _____________________fishing when he was a child. 13.I ( not/ used to) _____________________play games when I was a child. 14.How about ( go) _____________________to the zoo on Sunday evening ? 15.Nam (learn) _____________________English for 8 years. 16.Last night, my father ( watch) _____________________TV. 17.Ba (visit) _____________________ to Ha Long Bay this summer vacation. 18. I like ( work) _____________________as a volunteer for that orphanage. 19. Mr. Quang (teach) _____________________mathematics since 1999. 20. This house (build) _____________________two years ago. III. Give the right form of the words in brackets 1. Chrismas season is also a……………………..season. (festival) 2. Birthday is a family……………………….(celebrate) 3. I am…………………..that he won the prize. (amaze) 4. This film is really…………………………… (bore) 5. My mother liked the ………………………...of that young pianist. (perform) 6. I was ………………………….at the end of the film. (shock) 7. What I like about festivals is that they show the ............................... values of different communities. (culture) 8. On special occasions, people usually have .............................. drinks. (celebrate) 9. I’ve seen a lot of ........................ in my life. (parade) 10. Another season is coming. (festival)

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