Упражнение 15

 

  1. Probably the most important use of electricity in the modern house is producing light.
  2. Little was known about the nature of electricity in the XIX century.
  3. At present scientific work is being done mostly by large groups of researchers.
  4. The computer performing addition, two numbers to be added come from the memory.
  5. The problem of new generators is likely to be one of the most essential.
  6. The Soviet Union is known to have put into operation the first atomic station in 1954.
  7. Without experimenting there can be no progress in science.
  8. Is this device more efficient than the other one?
  9. We all know of their designing a new type of device.
  10. What specialities do the students master in this university?
  11. Where else can interactive picture information systems be used?
  12. With the help of radioactive elements we are able to measure the thickness of various materials.
  13. You may take either this device or that one.
  14. Masers are up to 1.000 times more sensitive than any other type of amplifiers.
  15. When heated, a magnet lost part of its magnetism.
  16. After graduating from Petersburg University A.S. Popov remained there as a post-graduate at the Physics Department.
  17. When did the first calculating machine appear?
  18. For him to take this decision was not easy.
  19. For many centuries men were interested in obtaining new sources of energy.
  20. Why will to translate this scientific article be difficult?
  21. We must set the time for the beginning of the experiment.
  22. She has been to the theatre this month.
  23. Siberia has now been transformed into a big construction site.
  24. People should be able to use computers as problem-solving devices.
  25. Her friend said that that letter was full of interesting news and it had reached him two days before.
  26. The basic idea of a computer is that we can make the ma­chine do what we want by inputting signals that turn certain switches on and turn others off, or magnetize or do not magne­tize the cores.
  27. When the worker was applying the new method of work he got better results.
  28. The problem was that we didn’t know how to keep the results of the experiment.
  29. The students who are listening to the taped lesson study at the evening faculty.
  30. More than one hundred years have passed since the day when A.S.Popov demontsrated his radio receiver.
  31. Franklin was the first who developed a new theory of electricity.
  32. Since many elements of the computer can be working on different portions of the same task, the work may be done faster.
  33. If he had not used this formula, he would not have made this mistake.
  34. I'll solve this equation if you help me.
  35. If you want my advice, you should find another supplier.
  36. It was the study of natural phenomena that made it possible to formulate various laws.
  37. It was in the laboratory that we found him.
  38. Integrated electronics is a field so new and so fast changing that many interested people have difficulty keeping up with its day-to-day developments.