III. * Прочтите предложения, укажите номера предложений, в ко­торых инфинитив является подлежащим, и переведите все предло­жения:

1. То eliminate this counterflow was the task of the student.

2. To eliminate this counterflow, a third grid was placed bet­ween the plate and the screen grid and connected to the cathode.

3. To produce negative electrodes iron and zinc plates are used.

4. To produce negative electrodes was the first task of the engineer.

5. To conduct a series of experiments for the improvement of space communication is the first step in solving this problem.

6. To conduct a series of experiments on these substances the engineers studied the results of some other experiments.

7. To work in this field of science was the task of the engi­neer.

8. To work successfully in this field of science the student has to know the fundamentals of electrical engineering.

IV. Прочтите и переведите предложения:

1. The assistant is to perform all these operations.

2. The task of the laboratory is to perform all these opera­tions in a short period of time.

3. The operator was to tune the receiver to a definite fre­quency.

4. The problem was to tune the receiver to a definite fre­quency.

5. The function of this device was to compute all these quan­tities.

6. According to the programme the device was to compute all these quantities in a very short period of time.

7. The aim of the scientists was to investigate the operation of space communication systems.

8. The engineer was to investigate the properties of super­conducting materials under various conditions.

V. Прочтите и переведите группы слов:

1. the communication establishment; 2. communication establishment possibilities; 3. long-distance communication establishment possibilities; 4. low temperature physics; 5. low temperature physics investigations; 6. a transmission line; 7. the transmission line efficiency; 8. electrical control systems; 9. automatic control systems; 10. artificial radio-activity pro­perties; 11. artificial radio-activity properties investigations; 12. a great energy source; 13. the electric power consumption; 14. semiconductor quantum generators; 15. light wave energy; 16. super-speed computers; 17. radio frequency quantum gene­rators

VI. * Укажите дробью синонимы и синонимичные выражения;

к каждому слову (сочетанию) из левой колонки (числитель) подберите его синоним из правой (знаменатель):

1. source

2. to create

3. to supply

4. external

5. to compute

6. to perform

7. man-made

8. to affect

9. provided

10. to take into account

11. to obtain

1. to calculate

2. to make

3. artificial

4. to get .

5. a supply

6. to take into consideration

7. to influence

8. to construct

9. if

10. outer

11. to provide

VII. * Укажите дробью антонимы: к каждому слову из левой колонки (числитель) подберите его антоним из правой (знаменатель):

1. to separate 1. natural

2. internal 2. a transmitter

3. visible 3. high

4. reliable 4. to connect

5. artificial 5. unreliable

6. fruitful 6. thick

7. thin 7. external

8. to give off 8. to take

9. unique 9. close [s]

10. distant 10. invisible

11. low 11. fruitless

12. a receiver 12. commo