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btytyty95
2 năm trước
trộn 150 ml dd hỗn hợp chứa Na2co3 1M và k2co3 0,5m với 250 ml dd HCl 2M thì thể tích khí co2 sinh ra ở đktc là
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Choose the best answer A, B, C or D to complete the sentence. 1. Teenagers enjoy ............... to music and ............... out with friends. A. listen – hang B. to listen – to hang C. listening – hang D. listening – hanging 2. Don’t worry. It is ............... to travel to that village even at night. A. safe B. unsafe C. difficult D. inconvenient 3. Life in a small town is ............... than that in a big city. A. peaceful B. much peaceful C. less peaceful D. much more peaceful 4. The boys often help their parents to ............... water from the village well. A. gather B. collect C. absorb D. give 5. ............... month is the Hoa Ban festival of the Thai people held in? A. When B. Which C. How many D. How often 6. Vietnamese people have many ............... customs and crafts. A. tradition B. traditional C. culture D. cultural 7. It is ....................... in the city than it is in the country. A. noisily B. more noisier C. noisier D. noisy 8. The English test was ....................... than I thought it would be. A. the easier B. more easy C. easiest D. easier 9. English is thought to be ....................... than Math. A. harder B. the more hard C. hardest D. the hardest 10. My house is ....................... hers. A. cheap than B. cheaper C. more cheap than D. cheaper than 11. Her office is ....................... away than mine. A. father B. more far C. farther D. farer 12. Tom is ....................... than David. A. handsome B. the more handsome C. more handsome D. the most handsome 13. He did the test ....................... I did. A. as bad as B. badder than C. more badly than D. worse than 14. A boat is ....................... than a plane. A. slower B. slowest C. more slow D. more slower 15. My new sofa is ....................... than the old one. A. more comfortable B. comfortably C. more comfortabler D. comfortable 16. My sister dances ....................... than me. A. gooder B. weller C. better D. more good 17. This road is ....................... than that road. A. narrower B. narrow C. the most narrow D. more narrower 18. He drives ....................... his brother. A. more careful than B. more carefully C. more carefully than D. as careful as 19. It was ....................... day of the year. A. the colder B. the coldest C. coldest D. colder 20. She is ....................... student in my class. A. most hard-working B. more hard-working C. the most hard-working D. as hard-working

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