V. Fill in blanks with the Past Progressive or the Past Simple Tense of the verbs in margin.

1. I... a letter to my friend yesterday.                                                                    write

2. We... to a lecture yesterday at ten o'clock.                                                         listen

3. She... the piano from 11 till 12 o'clock.                                                              play

4. When he... in, I... my exercises.                                                                           come, do

5. What... you yesterday at 8 o'clock?                                                                   do

6. Yesterday when I... the newspaper, my sister... to a concert over the radio.             read, listen

7. She... out of the window when I... her.                                                             look, see

VI.  Choose the correct word form those given in brackets:

When I saw that actress on the stage for the first time, she (to look like, to take after) a small girl. From her biography I learnt that she (to look like, to take after) her mother, who had also been a great actress. 2. If you want some information on trade, go to the Ministry library. There are a lot of good (magazines, journals) on the subject there. 3. After coming home from work, my father likes to spend an hour reading (a newspaper, a magazine).

Контрольная работа № 12

I.   Translate the text.

How electrical energy is produced

There are several methods of producing electricity for practical purposes. The battery of a pocket torch may be contrasted with the source of enormous energy represented by a larger power station. Both are examples of the application of electrical energy to a particular purpose, and in general the purpose determines the nature of the method used to produce the energy. Practical methods of producing electricity may be enumerated as follows:

1. Chemical, as represented by the various types of batteries or primary cells in which the electricity is produced by purely chemical actions.

2. Electromagnetic, forming the basis of operation of rotating generators in which the electricity is produced by conductors moving through a magnetic field.This is the method employed in practice for generators of various sizes.

3. Thermo-electric, in which the heating of the junction between two different metals produces a very small voltage which may be used for purposes of temperature measurement and as a source of power.

4. Piezo- electric, in which a very small voltage is produced across certain faces of a crystal by application of mechanical pressure. This effect is used, for example, as a means of frequency control in radio oscillators or for gramophone pick-ups, but it is not suitable for power supply.

5. Electronic, characterized by the flow of electrons through evacuated or gas-filled tubes, and having the following forms: a) thermionic emission, in which the electrons are produced by the heating of special materials; b) photo- electric emission, in which electrons are liberated at the surface of certain substances by the action of light; c) secondary emission, in which electrons are driven from a material by the impact of electrons or other particles on its surface; d) Field emission, in which electrons are drawn from the surface of a metal by the application of very powerful electric fields

III. Translate the text.

Техника безопасности:

Бытовые приборы, имеющие защиту от воздействия влаги, имеют специальную маркировку, однако это вовсе не значит, что не следует быть внимательным. Всегда помните о том, что сочетание воды и электричества очень опасно.

IV. Fill in the blanks with prepositions and adverbial particles where necessary:

1.Instead... buying something... everyday wear, as she had first intended, Mary bought

a... sleeveless dress... better waer.2. I don't advise you to buy this pair... shoes. I am afraid

they’ll soon wear....3. I wonder why the water has set the table... two persons instead... three. 4. Speaking at the production meeting, the director... the factory pointed... that each... the workers and engineers was responsible... carrying... the plan.

V. Use the Past Indefinite or the Past Perfect.

They (to complete) all the preparation for the fancy-dress ball by 5 o'clock.