Exercise 4. Найдите в тексте инфинитивные конструкции

Exercise 5. Найдите предложения со сложным подлежащим при глаголе-сказуемом в действительном залоге, переведите:

1. The phenomenon of superconductivity appears to have been discovered as early as 1911. 2. Before 1911 superconductivity was assumed to be impossible. 3. Recent discoveries in superconductivity made scientists look for new conducting materials and for practical applications of the phenomenon. 4. The latest achievements in the field of superconductivity are certain to make a revolution in technology and industry. 5. Recommendations from physicists will allow the necessary measures to be taken to protect the air from pollute 6. Lasers are sure to do some jobs better and more economically than other devices. 7. M. Faraday supposed a light beam to reverse its polarization as it passed through a magnetised crystal. 8. Superconductors are likely to find applications we don't even think of at present. 9. A Dutch physicist found a superconducting material to return to normal state when a strong magnetic field was applied. 10. Properties of materials obtained in space prove to be much better than tin produced on Earth. 11. There are prospects for lasers to be used in long distance communication and for transmission of energy to space stations. 12. The electrical resistivity of a mercury wire was found to disappear when cooled to -269 °C. 13. Additional radio transmitters let the pilot make his approach to an airport by watching his flight instruments. 14. There seems to be a lot of alloys and compounds that become superconductors under certain conditions.