Предтекстовые упражнения

I. Прочтите предложения, укажите в них оборот «именительный падеж с инфинитивом» и переведите предложения:

1. Electronics is thought to be a young science.

2. The electric generator is known to be a machine that con­verts mechanical energy into electrical energy.

3. Alpha rays are considered to be positively charged helium atoms.

4. An electric cell is believed to consist of an electrolyte and two electrodes.

5. This voltage source was supposed to supply current for this circuit.

6. The value of the output voltage of the cell was found to depend only on the materials used.

7. Due to these experiments this substance was shown to be a good conductor.

8. The secondary coil of the transformer is assumed to have more turns than the primary one.

9. Cadmium was reported to be very useful for application in transistors.

10. This scientist is expected to make a report on the funda­mentals of radio engineering.

11. The designer is said to construct a new device by using semiconductors.

12. The antenna was found to receive only a small part of energy radiated by the transmitter.

13. Atomic nuclei are believed to be composed of protons and neutrons.

14. An electric cell is known to be used for electric energy production.

15. The efficiency of these tubes is reported to be perfected.

16. Radio engineering in the USSR is considered to have made considerable progress.

17. The engineer is expected to have finished the experiment.

18. The engineers are said to have discovered new means of testing the equipment.

19. The students are said to have obtained very important data on the conductivity of a new substance.

II. а) Найдите в словаре глаголы и сочетания и запомните их значения:

to seem, to appear, to prove, to turn out, to happen, to be likely, to be unlikely, to be certain, to be sure

б) Прочтите и переведите предложения, обращая внимание на пе­ревод сказуемого:

1. This substance proved to be a good conductor.

2. The engineer seems to work at the problem of waves traveling.

3. The laboratory appears to investigate this phenomenon.

4. The substance turned out to be unique in its properties.

5. The engineer happened to carry out this very important experiment.

6. Nuclear energy is certain to be the prime source of heat energy.

7. The cyclotron is likely to be the simplest and oldest type of accelerator.

8. He is sure to analyze the results of the test.

9. The rays from uranium compounds proved to differ from X-rays.

10. The dimensions of the body are likely to change under different temperature conditions.

11. These experiments appeared to be carried out in our laboratory.

12. The network of transmitting stations seems to be built in this region.

13. The laboratory is certain to be equipped with perfect measuring instruments.

14. This energy source is unlikely to be used in this system.

15. The application of new superconductive materials seems to be suitable for this device

III. Прочтите слова и группы слов:

micro [ai], microelement, microworld; image, elec­tron-optical image, electron-optical image converters; opaque [ou'peik], opaque materials, to penetrate into opaque materials; negligible, negligible radiation, negligible inten­sity; celestial, celestial body, waves emitted by ce­lestial bodies; the universe, facts about the uni­verse; ultra-short waves; ultra-violet radiations; (to) collide [ai], collision, collisions of bodies, collisions of ga­laxies; aircraft, aircraft location; a meteor, meteors collisions; (to) ensure, (to) ensure radio contact, to ensure reliability of communication

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