А) составьте вопросы, ответами на которые являются следующие предложения: 1. yes, they did. (the scientists carried out research in the field of geology and mining.) 2. no, there were not. (there were only a few higher mining schools in the country.) 3. no, it did not. (the academy established close contacts with the coal and ore mining industries.) 4. yes, they did. (they took an active part in the development of heavy industry.)

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