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vantris
2 năm trước
Nêu pp thu được Cu tinh khiết từ hỗn hợp Al2O3, Fe2O3 và CuO
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Until World War II there were very distinct (1) (society) groups in British society. There was an upper class that included the (2) (aristocrat) and many people who lived on inherited wealth a middle class that could be (3) (divide) into upper middle class, middle class and (4) (low) middle class, and a working class that included both skilled and craftsmen and unskilled (5) (industry) workers and (6) (agriculture) laborers. The (7) (divide) between the classes were reflected in many aspects of life. Working – class children usually left school and went out to work at the age of 14. Upper class children were educated in private schools and formed the (8) (major) of students at university. Pubs were divided into public bars and saloon bars which were more (9) (expense) and more comfortable. Trains had first, second and third class (10) (carry). Theatres had a dress circle where theatre goers wore evening dress, and a gallery where the seats were cheaper and evening dress was not worn.

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