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baekhyunha3
2 năm trước
Cho 10g hỗn hợp FeO và Mg tác dụng hết với HCl tạo ra muối và 4,48l khí H2 ở đktc a, Viết PTHH b, Tính khối lượng của mỗi chất trong hỗn hợp c, Tính % theo khối lượng của mỗi chất
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I. Find a mistake in the four underlined parts of each sentence. 1. What time does Mai has English class? A B C D 2. Do you often go at school library when you have free time? A B C D 3. She cleans the floor every morning. She cleans it now. A B C D 4. When time do you usually get up every day? A B C D 5. Does your mother and Mrs. Lanh work here? Yes, they do. A B C D 6. How many child does she have? Two sons and two daughters. A B C D 7. John are cleaning the room at the moment A B C D 8. I swim usually at the weekend A B C D 9. I and Lan rides a bike to school everyday A B C D 10. My mom don’t usually go to work on Saturday A B C D 11. My father works at the moment. A B C D 12. I am often playing football on Saturdays. A B C D 13. She is wanting to buy a new computer. A B C D 14. My children doesn’t like reading. A B C D 15. We have breakfast now. A B C D 16. The girls are skip on the playground. A B C D 17. Ann gets up at 6 o’clock and is having breakfast every day. A B C D 18. I’m sorry I don’t have time. I cook dinner. A B C D 19. I can see that there is a vase behind of the light. A B C D 20. We don’t stay up late in night. A B C D

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