Упражнение 4

 

  1. He doesn’t think about his future work, does he?
  2. All the problems having been solved, they went home.
  3. An interesting research in the field of electronics is being done at our Institute.
  4. What is she doing this week?
  5. What is peculiar about the upper atmosphere of the earth?
  6. Mathematics is more important for technical students than many other subjects.
  7. Modern computers can multiply two numbers in a microsecond.
  8. Our task is to study well.
  9. Semiconductors are shown to be good detectors of radio waves.
  10. The basic ingredients of a communications model include a source, encoder, message, channel, decoder, receiver, feedback and noise.
  11. The idea to use this substance is not new.
  12. The new devices have a number of advantages over the old ones.
  13. The temperature of a conductor being raised, the motion of the electrons in the conductor increases.
  14. The universities are large centres of education, aren’t they?
  15. Who was the first to invent the electric lamp?
  16. Which part of the concert did you like most?
  17. The whole structure of the information industry remains unchanged.
  18. What did electronics produce?
  19. Did you answer the questions really well?
  20. Yesterday the students of our group came to help me with mathematics.
  21. When making the experiment he made notes.
  22. What must Mike do to support his views?
  23. We shall have completed our experiments by the end of the week.
  24. Popov has become the inventor of the radio, May 7 being celebrated each year as "Radio Day" in the Soviet Union.
  25. They couldn't have at least paid the postage.
  26. The company shouldn't waste any more time on this project.
  27. Some day atomic energy might have been used to control the weather of the world.
  28. Don't light the lamps.
  29. He knew that no one could help him.
  30. She asked when the new programme would start.
  31. I know my parents would be glad to see you.
  32. After Hertz had published his experiments proving the existence of electromagnetic waves, A.S. Popov thought of a possibility of using Hertz waves for transmitting signals over a distance.
  33. For an electrician the most important question is whether a solid is a conduct­or of electricity or not.
  34. Why this is so remains a matter of dispute.
  35. Circuits that can perform this logical operation and similar ones have been built and tested.
  36. A material which allows electricity to flow through it is called a conductor.
  37. A transistor is a small electronic device whose function is the same as that of an electronic tube.
  38. As it was very late, everybody went home.
  39. The lower the price, the less likely it is that new firms will attempt to enter the market.
  40. If sound could propagate in interplanetary space it would cover this distance in 14 years.
  41. Provided all of the requirements were met, the efficiency of the apparatus would be increased.
  42. Although the existence of computer was a reality, only in 1970s have we got a microprocessor.
  43. It was not until mid-90ies that some progress was observed.
  44. It is these facts that drew our special attention.
  45. Atomic energy finds such wide and varied application in our life that our age might be called the age of atom.