Pre-text Exercises. l) a portable direction finder – переносный радиопеленгатор

LESSON ONE

UNIT THREE

Notes

l) a portable direction finder – переносный радиопеленгатор

2) race against time – бегут на время

3) fthe rules call for – правила требуют

4) identify themselves by voice announcements – дают знать о себе голосом

5) on the air – в эфире

6) amateur band – радиолюбительский диапазон частот

7) in sequence – последовательно, одну за другой

8) competitive spirit – дух соревнования

9) are fully aware of the importance – вполне понимают значение

III. Say whether the following statements are true or false:

1. In radio sport the key word is competition. 2. One particularly interesting form of radio competition is called "Fox Hunting". 3. Each "fox" is on the air once every five minutes. 4. The announcements, which are very long, are made on amateur bands. 5. The winning "hunter" is the one who last locates all three "foxes" in sequence. 6. They are fully aware of the importance of communications-electronics in the space age.

IV. The text contains three main ideas. Divide the text into three logical parts and say briefly what each part is about.

V. Say how radio sport is characterized in the introductory part.

VI. a) What is the main principle of radio competition called "Fox Hunting"? b) Find the information in the text about the rules of "fox hunting" and answer the following questions:

1. What do the "foxes" do at the starting signal? 2. How often do "the foxes" identify themselves? 3. What devices do "the foxes" use to make voice announcements? 4. The winning "hunter" is the one who first locates all three "foxes" in sequence, isn't he?

VII. Can you say in what way the competitive spirit that characterizes radio sport shows itself in the development of electronics.

VII. Retell briefly the information you have learned from the text.

IX. Imagine that you are going to take part in a scientific conference. The theme of your report is "The Family of Electromagnetic Waves". While preparing the report use the information of texts А, В, С and the following plan:

1. Seven kinds of rays are close relatives.

2. The use of electromagnetic waves.

3. Characteristics of radio waves.

4. Short waves and their application in radio sport.

• Grammar: Perfect Tenses Active and Passive (§2, 3).

Perfect Continuous Active (§ 2, 2).

Functions of the verb to have(§ 9).

• Word-formation: suffixes -less, -ful.

• Individual Work: Lab Work "Functions of the verb to have".

I. Practise the reading of the following words:

knowledge ['nPlIG], record ['rekɔ:d], manual ['mxnjuəl], conversation [ˏkPnvə'seISn], drum [drAm], to shout [ʃaVt], pattern ['pætn], to reverse [rI'vE:s], to reproduce [ˏri:prq'dju:s], to wind [waInd], means [mi:nz], to store [stO:(r)], stereo ['steriqV], channel ['Cxnl].

II. Make sure if you can read these words correctly and say what words in the Russian language help you to guess their meaning:

modern, person, phonograph, code, signal, telegraph, symbol, method, diaphragm, experiment, poem, to reproduce, stereo, process, principle, line, microphone, original, music, laboratory, energy, apparatus, instrument, diameter, type..

III. Form adjectives adding the suffix -ful to the given nouns. Translate the nouns and adjectives into Russian:

Example: beauty – beautiful – красота – прекрасный

harm, power, use, fruit, skill, purpose, wonder, care, success, truth hope, taste, respect, meaning, art, change, peace, watch, help.

IV. Form adjectives adding the suffix -less to the given nouns. Translate the nouns and adjectives into Russian:

Example: hope – hopeless – надежда – безнадежный

wire, noise, help, motion, friend, aim, shape, branch, cause, character, sense, respect, object, ground, harm, change, power, colour, limit, meaning, voice, weight, life.

V. Read the words and say what suffixes they have and what parts of speech they belong to:

use, useful, usefulness; invent, inventor, invention; transmit, transmitter, transmission; work, worker; special, speciality, specialist; practice, practical; contain, container; lecture, lecturer; create, creative, creation; accelerate, acceleration, accelerator; determine, determination; proper, properly, property; science, scientific, scientist; discover, discovery, discoverer; important, importance; react, reaction, reactor, reactivity; arrange, arrangement; capable, capability; apply, application.

VI. Make sure if you remember the following verbs. Consult a dictionary:

to send, to cut, to represent, to notice, to sound, to happen, to find out, to consist of, to attach, to turn, to shout, to move, to hear, to store, to release, to repeat, to wear out, to transmit, to reproduce, to follow, to hit, to convert, to fit, to move, to represent, to wind, to claim, to damage, to link.

VII. Define the tense-forms of the verbs in the following sentences. Translate them into Russian:

1. I have just turned the radio on. 2. Have you listened to the news? 3. He understood the text after he had read it again. 4. I have read this book three times. 5. He has never been to the Carpathians. 6. He has seen this film. 7. Have you ever been to St. Petersburg? 8. He had finished his work by 5 o'clock yesterday. 9. The technician will have recorded the data before you come. 10. I have not seen him since he graduated from the University. 11. We shall have completed our experiments by the end of the week. 12. My friend had prepared his report before we spoke to you. 13. Electronics has made a rapid progress. 14. He had published his article by the end of the month. 15. We've played lots of matches this season, but we haven't won many. 16. She has spent a great deal of time in the Far East. 17. They'll have finished their work by lunchtime. 18. Have you read anything interesting lately? 19. They've probably forgotten the time. 20. They have accepted the scientist's suggestion. 21. Moscow Radio has been transmitting its programmes to other countries since the thirties. 22. We had been conducting this experiment for two hours before you came. 23. When she arrived, I had been waiting for two and a half hours. 24. It has been raining since two o'clock.

VIII. Translate the following sentences into Russian paying attention to the predicates in the Perfect Passive:

1. This theory has been used for analyzing the experimental data. 2. In my opinion this result has not been proved by anybody. 3. The apparatus used in our research has been described recently. 4. We must compare our data with those that have been obtained by other investigators. 5. Many difficulties had been overcome before the researcher succeeded in his work. 6. After the new device had been tested it was installed in our laboratory. 7. The construction of this television centre will have been completed by the end of the next year. 8. In our country great progress has been achieved in developing all branches of science and engineering. 9. Many different devices have been created in order to improve the performance of communications. 10. The information has been based on the data received from a computer. 11. Much research has been carried out in order to establish the causes of this phenomenon. 12. This question has already been discussed at the conference. 13. By the end of the year a large variety of semiconductor devices will have been produced. 14. This equipment had been repaired before you came. 15. This text has just been translated. 16. Mendeleyev's periodic law has been accepted as a universal law of nature.

IX. Translate the following word-groups into Russian, pay attention to the tense-forms of the verbs:

the scientist has suggested; the motion had been caused; the theory has advanced; the methods have been developed; he has been developing; the progress has been made; the suggestion has been applied; the observation has shown; the problem has been solved; the error will have been determined; the point of view has influenced; the chemist has written; the number has exceeded; the energy had been converted; the radio has been transmitting.

X. Compare the use of the Past Indefinite and the Present Perfect in the following sentences, translate them into Russian:

1. I have written several letters today. I wrote several letters yesterday. 2. They have made a new experiment this week. They made a new experiment last week. 3. She has been to the theatre this month. She went to the theatre last month. 4. Have you ever been to London? Yes, I've been there once. I went there in 1998. 5. Have you ever seen "Hamlet"? Yes, I've seen "Hamlet" several times. I saw it at our theatre three years ago and at Moscow theatres in 1995 and 2000. 6. He has graduated from the Moscow University. He graduated from the Moscow University in 1988. 7. He has seen this film. He saw this film yesterday. 8. He has improved his device; you may use it. He improved his device a week ago. 9. He prepared his report ahead of time. Have you prepared your report? 10. The results of this research were published long ago. My friend has already published the results of his discovery.

XI. Define the functions of the verb to have in the following sentences. Translate them:

1. They have already passed the examination in electrical engineering. 2. Automated systems have a number of advantages. 3. Our district has now been transformed into a big construction site. 4. Gamma rays have no electric charge. 5. Cosmic television has a great future. 6. He had to work hard to complete his investigation in time. 7. The engineer will have to improve the accuracy of this machine-tool. 8. A new method has been used in order to investigate this problem. 9. I have to do this work now. 10. We had to repeat the experiment. 11. Our planet has powerful sources of energy. 12. You will have to go to the library to get this book. 13. I had to leave early because I didn't feel well. 14. We've got a new teacher. 15. She has a lot of character and energy. 16. Yesterday I had a bad headache. 17. She will have many new subjects next term. 18. The scientist had to stop the experiment. 19. Besides literature, we have to study history and philosophy. 20. The electron has almost the same mass as the proton.

XII. Define the functions of the word since in the following sentences. Translate them:

1. Colour television has been functioning in our country since 1967. 2. More than a hundred years have passed since the day when A.S.Popov demonstrated his radio receiver. 3. Many expeditions have been here since. 4. I've known her since we were children. 5. Since you are here, I may go home. 6. There is no flow of electrons since the electric current is broken. 7. We've lived in three different towns since last year. 9. Since you weren't at the meeting, we took the decision without you. 9. How long is it since you left school? 10. London has been a capital since 1066. 11. Telescopes are being used since their invention. 12. People wished to handle atom since ancient times. 13. It's ages since I saw you last. 14. He left for the Crimea and has been living there since. 15. Since your first letter, we haven't heard from you. 16. Since you have not got anything to read, let's talk.

XIII. Match up the words which are opposite in meaning:

to stop, frequently, high, charge, to start, important, first, part, common, rarely, low.complicated, discharge, the whole, quick, transmitter, to heat, unimportant, increase, receiver, to cool, light, decrease, simple, heavy, to begin, slow, special, last, to finish.

XIV. Try to memorize the words and word-groups:

■ to have a good knowledge of – иметь хорошие знания ■ to play records – проигрывать пластинки ■ in order to do this – чтобы сделать это ■ a strip of paper – полоска бумаги ■ to send messages – посылать сообщения ■ much more quickly – гораздо быстрее

■ to be a true scientist – быть настоящим ученым ■ a little more complicated – немного более сложный ■ speed – скорость

■ to devise – изобретать, придумывать ■ needle – игла; стрелка

■ tin – олово ■ foil – фольга ■ certain – определенный ■ to reverse – менять (направление) ■ to wind (wound) – вертеть, крутить ■ accident – случайность; случай ■ to hit (hit) – ударять.

LESSON TWO

I. Before reading the text answer the following questions:

I. What is the English for "проигрывать"? 2. Do you know that the original record-player was called a phonograph? 3. Who invented the phonograph? 4. Do you know the history of the invention of the first phonograph?

II. Find some information about a modern record-player in the text:

Text A

The Record-player. How Does It Work?

1. You may know a lot about music: you may have a good knowledge of modern records: but how much do you know about the machine that plays your records? How, for example, does it work? It will help you to understand how record-players work, if you go back to the person who invented the first phonograph, Thomas Edison.

2. He had been experimenting on ways of sending Morse Code¹ signal more quickly by telegraph: in order to do this, he built a machine which cut out small marks, representing the Morse symbols, into a strip of paper. By running the paper² through the transmitting machine at a very fast speed, he could send messages much more quickly than by the manual method. He noticed that the machine was making a noise which sounded like human voices³ in conversation. Edison was a true scientist: if something unusual happened he wanted to find out why: so he decided to fit a diaphragm to the machine, to see what this would do.

After a few experiments, Edison devised a machine which consisted of two diaphragms on either side⁴ of a drum of tinfoil. Each diaphragm was attached to a needle, which rested on the foil. Edison turned the drum by hand and shouted a poem into one of the diaphragms – the recording unit – which then cut a pattern into the tinfoil. This is because the diaphragm vibrations moved the needle in certain directions, which were recorded on the foil.

4. Edison then reversed the process so that the reproducing needle was at the start of the newly-cut needle path⁵ and started winding the drum again. He then heard his own voice repeating the poem: the needle, following the path in the foil, vibrated its diaphragm which then reproduced the sounds that the other diaphragm had recorded.

5. This all happened in 1877, more or less by accident. In a hundred years of development and experimentation, the phonograph has developed into what we know now as the record-player. The principle is still the same, however, sound waves hitting a microphone (diaphragm) are then converted onto a record by mechanical or electronic means. The sound is then stored, it is released as vibration when the needle follows the path that has been cut, and reproduces the original message. Stereo sound is a little more complicated. Two microphones, each attached to its own recording systems, record the sound that is produced from the loudspeakers. It appears very similar to the original sound. Nowadays, by "mixing" the sound, and by changing it from one channel to the other, you can make the sound travel from one loudspeaker to the next one.

Notes

1. Morse Code – алфавит Морзе

2. by running the paper – посредством пропускания бумаги

3. like human voices – подобно человеческим голосам

4. on either side – с обеих сторон

5. the newly-cut needle path – только что прорезанная дорожка

III. Say whether the following statements are true or false:

1. Edison had been experimenting on ways of sending Morse Code signals more quickly. 2. The machine was making a noise which sounded like human voices in conversation. 3. Edison turned the drum by hand but couldn't shout a poem into the diaphragm. 4. The diaphragm vibrations moved the needle in certain directions. 5. The work of the modern record-player is based on other principles. 6. One can make the sound travel from one loudspeaker to the next one.

IV. Look through paragraph I and say in what connection the name of Edison is mentioned in it.

V. Read paragraph 2 attentively and retell its contents to your partner. You may use the following plan:

1. Edison made experiments on the ways of sending Morse Code signals (how?)

2. He made a special machine (what was this machine?) for his experiments.

3. While experimenting on his machine at a very fast speed he noticed some strange noise (what was the noise like?).

4. Edison wanted to find out why the machine was making a noise and... (what did he decide to do?)

VI. In paragraph 3 find the English equivalents for:

замечать, создавать шум, звучать, беседа, истинный, голос, выяснять что-то, происходить, решать, человеческий, необычный, поэтому.

VII. Translate paragraph 4.

VIII. Describe the construction of the phonograph using the words:

phonograph to be drum of tinfoil to consist of 2 diaphragms to be attached to 2 needles to rest on foil.

IX. Write out of paragraph 6 the words which can be used for describing how modern record-players work.

X. Tell the story of the record-player and the principle of its work.

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