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5. Match a line in a with a line in b.

А В

1. Are lasers amplifiers or a) It is a device for increasing the

oscillators? strength of a signal.

2. What is an oscillator? b) Welding, cutting, holography.

3. What is an amplifier? c) It is a generator or source of

4. What makes lasers light.

dangerous? . d) Oscillators.

5. What are lasers used for? e) When treated inadequately.

6. When does the laser become f) Their producing an extremely

a source of destruction? powerful beam of light.

6.Match the words with the similar meaning.

synthetic feature

exactly powerful

characteristic usage

application to offer

to suggest to possess

single artificial

strong precisely

to have separate

7. Find in the list these parts of speech.

(noun) amplify, weak, absorption, to treat

(noun) partially, excited, bounce, pulse

(adjective) activate, solution, flat, principle

(adjective) tiny, purify, majority, totally

(adverb) intense, forth, numerous, since

(adverb) powerful, infrared, exactly, cavity

(preposition) input, actually, via, ultraviolet

(verb) radiation, synthetic, reflective, manipulate

(verb) emit, unique, oscillator, quality

8.Translate the following words and word-combinations into Ukrainian:

To represent; a new branch; less than; real revolution; automatic control; mathematical formula; to require; arithmetic operations; exceptional importance; unsolved; human possibilities; intense work; electric impulses; scheme; addition; subtraction; multiplication; division; analogue; digital; space vehicles; network.

  1. Translate the following sentences into Ukrainian paying attention to the Infinitive Constructions:

Electronics is known to be a young science. 2. The application of electronics in everyday life and industry has proved to increase enormously in the last few years. 3. Electronics is believed to begin when the valve was invented. 4. Electronic equipment is known to have already been applied at the beginning of the century. 5. Electronics is sure to find an ever growing application.

10.Translate the following word-combinations into Ukrainian paying attention to the Nouns:

Logic analysis, analysis problems; problem formulation; formulation problem; a radio-vision communication equipment; a communication medium; mobile radio-communication system; the chain reaction theory; air pressure; meter reading; special purpose devices; flight control center; super-speed computers; two-way radio communication.

11. To make a hologram is rather difficult. Making a hologram is rather difficult.

1. To produce a powerful beam of light is possible with the help of a

laser.

2. To recognize a problem is the first step to its solution.

3. To establish relationship between naturtal phenomena is a major

task of his theory.

4. To introduce the invention into practice sometimes requires more

effort than making it.

5. To point out the mistakes to some people proves quite difficult.

6. To analyze the evidence correctly requires a lot of attention.