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ntmhnghn
2 năm trước
1.Bằng phương pháp hóa học hãy nhận biết các dung dịch đựng trong lọ mất nhãn: a.HCL, HNO3, KCL,KNO3 b.NACL,BaBr,NaI, HCL,KOH c.NA2SO4, H2SO4,KOH,NACL,NANO3 d.NAOH,H2SO4,BA(OH)2,HCL,KNO3
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Giúp em gấp mn ơi !!!! ai nhanh em sẽ vote 5 sao và ctlhn!!! II- Some of the comparisons in these sentences are incorrect. Underline and correct the mistakes. 1. The cost of living in the countryside is more low than in the city. 2. In general, putting up a tent is not as difficult than building a house. 3. Harvest is the busiest time of year in the countryside. 4. Of the three types of cattle in the Mongolian desert, the sheep is slower. 5. A city has most interesting activities than the countryside. 6. The city offers more service. It's much convenienter than the countryside. 7. My village has only 1,200 people. It's not so crowded than the city. 8. Dogs are much more better than human beings at detecting smells. 9. Life in a big city is more exciting than life in a small town. 10. This cottage is near to the main road than the red one. 11. The paddy fields in the mountains are usually not as large as those in the lowlands. 12. The path through Dead Valley is the most dangerous in my country.

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