II. Прочитайте предложения, перепишите их, выделив указательные местоимения. Переведите письменно предложения на русский язык.

Example: We know that a computer is a complex electronic device. – Мы знаем, что вычислительная машина является сложным электронным устройством.

1. Those steps which can be programmed in advance offer the best opportunity for automation.

2. That radio doesn’t receive the BBC World Service very well.

3. Telecommunications usually involve a sender of information by a technology, such as a telephone system, that transmits information from one place to another.

4. The television audio signals are received by equipment similar to that used in other forms of radio.

III. Прочитайте предложения, перепишите их, обращая внимание на выделенное местоимение it, переведите предложения на русский язык.

Example: We find it necessary to repeat the experiment. (формальное дополнение) – Мы считаем необходимым повторить этот эксперимент.

1. Itis clear that the device is out of order.

2. It is one of the most important branches of science.

3. Electronics is a rather young science. It belongs to the twentieth century.

4. The use of the new equipment made it possible to minimize the number of workers.

5. Itwas Russian scientist A.S. Popov who discovered the principles of radio communication.

IV. Прочитайте предложения, перепишите их, обращая внимание на выделенные слова ones, one, переведите предложения на русский язык.

Example: One should be very careful. – Нужно быть очень осторожным.

1. One of the first types of laser was called a ruby laser.

2. Onecan hardly find a sphere where power is not used.

3. Some substances are efficient conductors, others – poor ones.

4. The simplest materials are those which have only one kind of atoms.

V. Перепишите предложения, употребив глаголы в правильной видовременной форме, переведите предложения на русский язык. Обратите внимание на функции глаголов to have, to do, to be в предложениях.

Example: This material (to have) many valuable qualities. – This material has many valuable qualities. – Этот материал имеет много ценных свойств.

1. Fax (to have) the advantage of speed.

2. The road (to have) to be built to take traffic away from the city centre.

3. They (to be) to prepare everything for the experiment three days ago.

4. The Internet (to be) a computer-based worldwide information network.

5. He (to do)not like publicity, and prefers to stay firmly in the background.

6. Semiconductors (to do) possess many wonderful properties.