Open the brackets. (Раскрыть скобки излучатель) of the electrons. 2. The diode (проводит) current in one direction only. 3. All the triodes (to have) the following electrodes: a cathode, a plate and the third element (to call) (сетка). 4. The grid (управляет) the flow of electrons. 5. (Чем ближе) the grid to the cathode, (тем больше влияния) it (to have) on the electron flow. 6. Photovoltaic cells (to use) the light of the sun (для производства) electricity. 7. Sunlight (to be) a clean, renewable energy source. 8. In the nuclear fission reaction, a large amount of energy (to release). 9. Nuclear reactors (to use) for (генерирование) electricity, moving aircraft carriers and submarines. 10. The nuclear power industry (to improve) the safety and performance of reactors.

Themselves Aztecs called themselves "Mechin" or "tenochka" and "atlaltelolka" - depending on the city of origin (Tenochtitlan, Tlatelolco). As to the origin of the word "Mexica» (mexica. From which, in fact, is the word "Mexico"), it expressed a very different version of its etymology: the word "Sun" in Nahuatl, the Aztec name of the leader Meshitli (Meksitli, Mekshitli) - type of algae grows in lake Texcoco. The most famous translator of Nahuatl Miguel Leon-Portilla, says that the word means "middle of the Moon." Self-name "tenochki" possibly comes from the name Tenocha - another legendary leader.

1.There is a book on the table.
Is there a book on the table? (общий)
What is there on the table? (специальный к подлежащему)
Where is a book? (специальный)
There is a book on the table, isn`t there? (разделительный)

2. He must work hard today.
Must he work hard today? (общий)
Who must work hard today? (специальный к подлежащему)
How must he work? (специальный)
When must he work hard? (специальный)
He must work hard today, mustn`t he? (разделительный)

3. We are leaving for Moscow next week.
Are we leaving for Moscow next week? (общий)
Who is leaving for Moscow next week? (специальный к подлежащему)
Where are we leaving for? (специальный)
When are we leaving for Moscow? (специальный)
We are leaving for Moscow next week, aren`t we? (разделительный)

4. We were reading the whole evening.
Were we reading the whole evening? (общий)
Who was reading the whole evening? (специальный к подлежащему)
What were we doing the whole evening? (специальный)
How long were we reading? (специальный)
We were reading the whole evening, weren`t we? (специальный)