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Câu 17. Dãy oxit tác dụng với dung dịch H2SO4 loãng là: A. MgO, Fe2O3, SO2, CuO. B. Fe2O3, MgO, P2O5, K2O. C. MgO, Fe2O3, CuO, K2O. D. MgO, Fe2O3, SO2, P2O5. Câu 18. Để làm khô một mẫu khí SO2 ẩm có (lẫn hơi nước) ta dẫn mẫu khí này qua A. NaOH đặc. B. Nước vôi trong dư. C. H2SO4 đặc. D. Dung dịch HCl. Câu 19. Dãy các chất không tác dụng được với dung dịch H2SO4 loãng là: A. Zn, ZnO, Zn(OH)2. B. Cu, CuO, Cu(OH)2. C. Na2O, NaOH, Na2CO3. D. MgO, MgCO3, Mg(OH)2. Câu 20. Nhóm chất tác dụng với dung dịch H2SO4 loãng sinh ra chất kết tủa màu trắng: A. ZnO, BaCl2. B. CuO, BaCl2. C. BaCl2, Ba(NO3)2. D. Ba(OH)2, ZnO. Câu 21. Cho một mẫu giấy quỳ tím vào dung dịch NaOH. Thêm từ từ dung dịch HCl vào cho đến dư ta thấy màu giấy quì: A. Màu đỏ không thay đổi B. Màu đỏ chuyển dần sang xanh. C. Màu xanh không thay đổi D. Màu xanh chuyển dần sang đỏ. Câu 22. Trung hòa 200ml dd NaOH 2M cần bao nhiêu ml dd dd H2SO4 0,8M? A. 125ml B. 200ml. C. 250ml. D. 500ml.

10. I _________buy a new car, so I'm saving as much money as possible. A. will B. am going to C. will be D. can 11. It's difficult to _________a healthy diet with a busy lifestyle. A. balance B. limit C. reduce D. benefit 12. My wife is going on her business next week so I have to ____ most of the chores around the house. A. distribute B. hold C. take D. handle 13. ____ system of the body lets us break down the food we eat and turn it into energy. A. Circulatory B. Digestive C. Nervous D. Respiratory 14. It’s not too late to ____ your bad habits (smoking, drinking, overeating, etc.) and immediately start living a happier, healthier life. A. get rid B. give on C. kick D. remember 15. If people breathe in deeply, their ____ can expand to twice their normal size. A. hearts B. kidneys C. lungs D. stomachs 16. Fish, poultry, beans or nuts ____ half of their dinner plate. A. make of B. make out C. make up D. make up of 17. Yoga increases endurance, ____ and flexibility. A. blood B. powerful C. strength D. strong 18. Acupuncture modality relies on sophisticated skills to select appropriate acupoints to ____ needles accurately. A. infuse B. inject C. insert D. install 19. “Look at those dark clouds!“ - “Yes, it ____ in some minutes.” A. will rain B. is going to rain C. are going to rain D. is raining 20. It‘s very hot. ____ the window. please? A. Are you opening B. Are you going to open C. Will you open D. Won’t you open 21. Although I have taken some aspirin, the headache ________ away. A. isn‘t going B. isn’t going to C. not go D. won’t go 22. Perhaps I ____ New York one day. A. am visiting B. am going to visit C. visit D. will visit 23. ____ by your father? A. Did that book write B. Did that book written C. Was that book writing D. Was that book written 24. Patient: "Please tell me how shall I take this medicine?” Doctor: “____” A. Take it home with you. B. Take it back to me. C. Take it twice per day. D. Take as much as you can. 25. Patient: “____” Doctor: "Yes. But don't worry. You’ll be given painkillers.” A. Will I get better soon? B. Will I be checked for temperature? C. Will it be painful afterwards? D. Will there be any side effects? 26. “I've called many times but the plumber hasn’t come yet.” - “ ____” A. Wait a minute, please. B. We do apologise for this matter. We’ll fix it soon. C. He's maybe busy now. D. The problem has been fixed already. 27. We’re best friends as we have a ____ interest in music. A. passion B. passionately C. passionless D. passionate 28. My teacher assigned us a writing task about ____ of our favorite singers. A. biology B. biography C. biodiversity D. biochemist 29. The local celebrities joined hands to ____ a fund-raising campaign for charity. A. solve B. conserve C. come up D. launch 30. No longer did Pokémon Go become the widespread ____ in Viet Nam. A. effect B. phenomenon C. invention D. news 31. Chopin was considered to be one of the greatest Romantic piano ____ of the 19th century. A. singers B. writers C. composers D. poets 32. This concert marks nine years since the death of Trinh Cong Son, a prominent ____ of modern Vietnamese music. A. comedian B. actor C. contributor D. figure 33. John made me ____ a lot with his hilarious jokes. A. laughing B. to laugh C. laugh D. laughed 34. I’d like ____ all of you to enjoy my party on this Friday. A. to invite B. inviting C. invite D. not invite 35. We expect Linh ____ to the airport late as the plane will take off in 15 minutes. A. to come B. not to come C. not coming D. coming 36. I’m happy ____ that you’ve passed your driving test. Congratulations! A. not hearing B. hear C. hearing D. to hear 37. My mother said that she would rather ____ to Hoi An than Nha Trang. A. to travel B. travelling C. not to travel D. travel 38. I allow my little daughter ____ with her friends in the flower garden. A. not to play B. to play C. playing D. play 39. My parents let my sister ____ camping with her friends in the mountain. A. not go B. going C. go D. to go 40. We intend ____ him the truth for fear that he’ll fly into a fit of madness. A. to tell B. telling C. not tell D. not to tell

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