Lập PTHH của các thí nghiệm sau, ghi rõ đk (nếu có) và cho biết loại phản ứng? a. Đốt cháy khí hiđro b. Cho luồng khí hiđro qua bột PbO, nung nóng c. Nhỏ dung dịch axit clohiđric vào ống nghiệm đã có sẵn vài viên kẽm

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2. I _________________ wash and iron my own clothes. (usual) * 1 điểm usual usually unusual usualy 3. She reminds us to eat _________________.(sensible) * 1 điểm sensible sensiblly sensiblely sensibly 4 Do your test _________________. (careful) * 1 điểm carefully careless carefuly uncarefully 5. He was very _________________ when he left the clinic. (please) * 1 điểm please pleased pleasing pleasant 6. When people have a cold, a fever or the flu, they usually go to the _______ for help. * 1 điểm A. dentist B. farmer C. worker D. doctor 7. Many people also take some ________ when they have a cough. * 1 điểm A. honey B. sugar C. milk D. vinegar 8. Linh / because she / had / did not go / school / Last Wednesday, / bad cold. * 1 điểm 9. pain / chest / My father / had / his /in/ a. * 1 điểm 10. ________________? – I am 40 kilos. * 1 điểm A. What is your weight? C. What is your height? B. How tall are you? D. How are you measuring? 11. How do you feel now? - ________. * 1 điểm A. I had a bad cold B. I'm ok C. You had a virus D. That’s normal 12. The __________ relieved the pain in my chest. * 1 điểm A. medical B. medicines C. symptom D. cures 13. Ba ____________________ to repair household appliances when he was young. (learn) * 1 điểm learns learning learnt to learn 14. Ba is good at ____________________ things.(fix) * 1 điểm 15. How old is your father ?-> What ______________? * 1 điểm is your father age is your father old is your father's age your father is age 16. How high is Big Ben Clock Tower ?-> What ___________ ? * 1 điểm is Big Ben Clock Tower high is Big Ben Clock Tower's height is Big Ben Clock Tower's high is Big Ben Clock Tower's how high 17. What is your sister’s weight? -> How ___________? * 1 điểm is your sister's weight is your sister's heavy is your sister's weigh is your sister weight 18. The __________ of flu include a headache, high temperature and aches. * 1 điểm A. symptom B. symptoms C. cure D. cures 19. Did your parents write ________ for you? * 1 điểm A. a note sick B. a sick note C. a sick of note D. a note of sick 20. You can buy medicine ___________ . * 1 điểm 21. If you have any questions , feel free to ask. All of your questions will be answer properly. Thank you.