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aduy2244
2 năm trước
Số oxit tác dụng với nước tạo ra bazo tương ứng là: Cao, Al2O3, N2O5, Cuo, NaO, BaO, MgO, P2O5, Fe3O4, K2O A.4 B.5 C.2 D.3 P/s: Mọi ng xem ảnh nha, em viết hơi khó nhìn
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Các câu hỏi liên quan

1. Chia động từ ở thì hiện tại hoàn thành 1. There is no more cheese. I (eat)……………. it all, I’m afraid. 2. The bill isn’t right. They (make)………….. a mistake. 3. Don’t you want to see this programme? It ………….(start). 4. It’ll soon get warm in here. I (turn)……….. the heating on. 5. ………They (pay)…….. money for your mother? 6. Someone (take)………………. my bicycle. 7. Wait for few minutes, please! I (finish)……………. my dinner. 8. ………You ever (eat)………….. Sushi? 9. She (not/come)…………… here for a long time. 10. I (work…………..) here for three years. 11. ………… You ever …………..(be) to New York? 12. You (not/do) ………… for project yet, I suppose. 13. I just (see)………. Andrew and he says he ……..already (do)………. about half of the plan. 14. I ………..just (decide)……… to start working next week. 15. He (be)…………. at his computer for seven hours. 16. She (not/have) ……………any fun a long time. 17. My father (not/ play)……….. any sport since last year. 18. I’d better have a shower. I (not/have)………. one since Thursday. 19. I don’t live with my family now and we (not/see)…………. each other for five years. 20. I…… just (realize)…………... that there are only four weeks to the end of term. 21. The train drivers (go)……… on strike and they stopped working at twelve o’clock. 22. How long…….. (you/know)………. each other? 23. ……….(You/ take)………… many photographs ? 24. (She/ eat)………………. at the Royal Hotel yet ? 25. He (live) ………….here all his life.. 26. Is this the second time he (lose)……………. his job ? 27. How many bottles………… the milkman (leave) ………….? He (leave) ……….. six. 28. I (buy)…………. a new carpet. Come and look at it. 29. She (write)………….. three poems about her fatherland. 30. We (finish) ……………………three English courses.

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