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Bài 3: Hãy nêu ý nghĩa của các công thức hóa học sau: a)Khí cacbonic CO2 c) Khí ozon O3 a)Thuốc tím KMnO4 d) Nhôm oxit Al2O3 (Biết O=16 ; C=12 ; K=39 ; Mn=55 ; Al=27)

I.Put the verbs in brackets in the correct tense form. 1. My sister (go) _________ to school at 7 o’clock every morning. 2. A:What_________you (do) _________, Hoa? B: I’m helping my mum with the housework. 3. We can’t go out now. It (rain) _________ very hard. 4. How _________ you (go) _________ to school every day? 5. My sister likes (cook) _________ very much. 6. _________your sister (listen)_________ to music in her free time? 7. Someone (knock) _________ at the door. Can you answer it? 8. Minh usually (do) _________ his homework in the evening. 9. Our school (be) _________ surrounded by mountains. 10. I (like) _________ maths but I (not like) _________ English.

11. His knowledge of history of art is _________ours. A. the same as B. very same as C. like same as D. more same as 12. Their kind of music is _____ mine. A. different with B. so different to C. as different than D. different from 13Some people think the band's rock and roll songs are very lively. They are _______ some of their gentle old songs.. A. the same as B. different from C. not as far as D. as much as 14. I love dancing, and my sister loves it, ________. A. so B. too C. neither D. either 15. He can't play the saxophone, and his brother can't __________ . A. either B. neither C. so D. too 16. No one else in the class plays the guitar John. A. as well B. as far as C. so well as D. as soon as 17. The Brit School is the most famous arts school in Britain. A. performing B. performance C. perform D. performed 18. Jane is not her brother. A. more intelligent as B. intelligent as C. so intelligent as D. so intelligent that 19. Since the 1970s, the festival in Glastonbury has taken almost every year and has grown in size. A. part B. place C. note D. notice 20. He drives as his father does. A. careful as B. more carefully C. the most careful D. carefully as 21. Dong Ho paintings are made on paper with beautiful colors. A. traditional – nature B. tradition - natural C. tradition – nature D. traditional - natural 22. I’ll be there I can. A. sooner as B. no sooner as C. as soon as D. soonest as Giúp em với ạ

Câu 7 : công thức hóa học của Iron (II) chloride FeCl2 cho biết ý nghĩa gì ? ( biết Fe = 56 , Cl = 35,5 )

viết mở bài và kết bài mở rông cho bài văn biểu cảm về cây tre Việt Nam

3 việc làm thể hiện lòng yêu chuộng hòa bình

Mọi người giúp mik vs ạ Cảm ơn nhìu

Làm chắc 1b và bài 3 và bài 4 nhé cảm ơn

1. My teacher said that she was happy with our results in the final exam. 2. She asked me if I knew the way to the nearest bus stop. 3. Liam said that his father had set up a new office the month before. 4. Hannah said that she would grow a lemon tree in her garden that afternoon. 5. My neighbour said that he could pick my two daughters up from their school the following day. 6. Mark wondered why they hadn’t contacted him recently. 7. Paul asked his friend if she wanted him to feed her dog while she was going on holiday. 8. Jane told me that she would visit her grandparents that summer. 9. Emily asked me why I was thinking of quitting the English club. 10. He asked me whether I had to wear a uniform to school. 11“Can he speak English fluently?” she asked me.