5.20. Translate the sentences.

1. The principles Ford used to make Model T are used in motor manufacturing to this day.

2. The building our students live in is not far from the university.

3. For a long time Bell couldn’t get the results he was looking for.

4. The problem this article deals with is connected with the subject we study.

5. The plant this material is produced at is in the Urals.

6. It is difficult to imagine the world we live in without radio, television and telephone.

7. The magazine a very interesting article is published in is available in our library.

8. At first it was not clear whether new telephone and teletype communication with ships via six satellites was economical and reliable or not.

9. It is known that many cities throughout the world suffer from air pollution.

10. The new methods of research the engineers had used at the plant greatly improved their work.

11. The inventor demonstrated the machine he had worked at.

12. As the warm air rises, cooler air takes its place.

13. Noise, which is any unwanted signal, can be a problem with amplifiers.

14. It was stated the conclusion was correct.

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