Английский язык экзамен

Задание 1.Выберите правильную форму глагола.
1. No city has cables ___________ directly.
a. lay
b. are laying
c. laid
2. Computers ___________ to perform series of mathematical operations.
a. are used
b. are using
c. have used
3. ___________ power losses, thick wires should be used.
a. Reducing
b. To reduce
c. Having reduced
4. For information ___________, it must be attached to a radio – frequency carrier wave.
a. to be transmitted
b. will be transmitted
c. transmitted
5. Various installations ___________ to transform electric power into mechanical and heat power.
a. have been used
b. are using
c. are being used
6. The experiment ___________ to be continued .
a. reports
b. is reporting
c. is reported
7. A computer ___________ to possess four main parts.
a. has been known
b. is known
c. knows
8. The atmosphere ___________ to extend several hundred kilometers above the Earth.
a. proves
b. has been proved
c. is proved
9. Transistor batteries ___________ to be used in systems that have to operate on weak signals, for example, in ultra-long-distance space communications.
a. expected
b. have been expected
c. were expected
10. Materials ___________ very high resistance are called insulators.
a. having
b. have
c. are having
11. A cable conduit is an arrangement ___________ in the ground.
a. building
b. is built
c. built
12. ___________ calculations, a computer displays results.
a. Having performed
b. Performed
c. Performing
13. A faulty cable ___________ between two manholes is to be replaced.
a. having run
b. running
c. runs
14. ___________ under different conditions, the devices were put to use.
a. having been tested
b. testing
c. tested
15. The device ___________ faulty, one cannot rely on its readings.
a. is
b. being
c. to be
16. RAM stands for Random Access Memory, information ___________ into and out of any single byte of memory.
a. being transferred
b. transferred
c. have transferred
17. Other factors ___________ constant, the current is known to be directly proportional to conductivity.
a. be
b. being
c. having been
18. A barometer is used for _______________ the atmospheric pressure.
a) measuring
b) measures
c) measurement
19. Is any metal capable of _______________ into a wire.
a) drawing
b) being drawn
c) having drawn
20. We know the atmospheric pressure __________ as altitude increases.
a) decreases
b) is decreasing
c) to decrease
21. Quantum electronics _________________, it became possible to produce clock that measure time with an accuracy of one second per 300 years.
a) having been developed
b) have been developed
c) being developed
22. Without the Sun there _____________ no light, no heat, no energy of any kind.
a) will be
b) would be
c) will
23. Oxygen is an element of greatest importance to the Earth as all living things __________ without it.
a) would die
b) will die
c) will be dying
24. If automatic checking of different kinds hadn’t been built into the computer it __________ operate with extraordinary reliability.
a) Couldn’t operate b) can’t operate c) can’t operating

25. If the operators some additional components, they would have been able to actuate the relay
a) used b) have used c) had used

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