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henlachiu2
2 năm trước
Thả 2,3g kim loại Na vào 100ml dung dịch AlCl3 vào 100ml dung dịch AlCl3 0,3M thấy thoát ra khí A , xuất hiện vết kết tủa B . Lọc kết tuat B nung đến khổi lượng k đổi cân nặng a gam . Viết PTHH và tính a
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20. it rained heavily, I went to school on time. A. However B. But C. Although D. Because 21. He didn’t answer the questions correctly _______. A. although he isn’t intelligent B. because he is intelligent C. in spite of his intelligence D. despite his intelligent 22. ______, I can’t hear what he is saying. A. Because of the noise B. Because of the soft music C. Though the music is noise D. In spite of the noise music 23. _____, I feel very refresh. A. Because I work very hard B. Although I get up early C. Because of getting up early D. Despite getting up late 24. They live happily ______. A. because they have no money B. though they are rich C. in spite of their poverty D. because of their poor 25. He can’t join in the volunteer campaign _______. A. although he is busy B. because he hurts his legs C. in spite of working very hard D. because of registering for it 26. Though he drove carefully, he had an accident yesterday. A. Despite his carelessness, he had an accident yesterday. B. Despite he drove carefully, he had an accident yesterday. C. In spite of driving carefully, he had an accident yesterday. D. In spite of a careful drive, he had an accident yesterday. 27. He was very tired but he kept on working. A. Despite very tired, he kept on working. B. Though his tiredness, he kept on working. C. Although he was very tired, but he kept on working. D. He kept on working although he was very tired. 28. Although it rained heavily, they went on working. A. In spite of the rain heavily, they went on working. B. In spite of the raining heavily, they went on working. C. Despite the heavy rain, they went on working. D. Though the fact that it rained heavily, they went on working. 29. Cars cause pollution but people still want them. A. Because cars cause pollution, people want them. B. Despite the fact that cars cause pollution, people want them. C. Cars cause pollution although people want them. D. Cars cause pollution because people still want them. 30. She was seriously ill but she enjoyed life very much. A. In spite of her serious illness, she enjoyed life very much. B. Although she enjoyed life very much, she was seriously ill. C. She was seriously ill because she enjoyed life very much. D. Despite seriously ill, she enjoyed life very much.

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