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it is carelessly used. A fault installation or a defective piece of equipment can cause a serious fire and there is also a danger of an electric shock.

Many precautions are taken and safety devices are used to minimize these dangers.

The most common safety device used in every household installation the ordinary fuse. This is simply apiece of wire which is connected in series in the circuit. It is of such resistance that it will melt and therefore break the current, if the current flowing in the circuit exceeds a certain amount. \Vhen it happens, we say the fuse "blows".

б) Найдите герундий и переведите предложения на русский язык:

1 . A capacitor is used for storing electricity.

2. Marconi was only twenty-one years old when he succeeded in transmitting signals by radio waves.

3. You can get an electric shock by touching a faulty apparatus.

в) Выберите требуемую форму глагола и переведите предложения на русский язык:

1 . If the terminals of a battery are connected by a metal wire, the free electrons (will flow, would flow) towards the opposite terminal.

2. If a fault developed inside apparatus, a person (would get, would have got) an electric shock.

3. If you had increased the cross section of the conductor, you (would decrease, would have decreased) its resistance.

г) Ответьте на вопросы:

1 . What is the most common safety device?

2. What happens when the current exceeds a certain amount?

3. When do we say that the fuse "blows"?

8. Вставьте предлоги по смыслу:

1. Russia is washed ... three oceans and twelve seas.

2. The first manned spaceship piloted ... the citizen ... Russia Yuri Gagarin was launched ... April 12, 1961.

3. Russia is very rich ... natural resources.

4. A fuse is apiece . . . wire which is connected ... series ... the circuit.

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olls in the box.

3.-Is there a bookshop near your scholl?

-Yes,it is.

4.We fond of playing with our pets.

5.We made the friends two years ago.

6.Is it often snow here?

7.It is rain now.

8.Let's sent him a postcard.

9.Do you enjoy to go to the theatre?

10. Did he met mrs Green in the park?

И в этом тоже надо исправить ошибки

1. A crocodile has a long mouth with many big tooth.

2.An elephant is a very large wild animal that live in Africa and Asia.

3.Rabbit is a small animal with long ears.

4.When did they visited the Tretyakov Gallery?

5. Who does want to visit the History Museum.

6.The Smiths wants to go to the Boshoi Theatre next Sunday

7.The Tretyakov Gallery is one of the best museum in the world.

8.The boys' aunt studied Italian, didn't he?

9.Tom's sister ckeaned the windows, wasn't she?

10.He isn't want to go to Hyde Park now.

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