Английский 1 вар

№2 описать значение it, that. one.

1. It is proved that light needs time to travel any distance.

2. One must take part in scientific work.

3. Specialists consider that in future city transport will reject gasoline.

№ 3 описать значения глаголов to be, to have, to do.

1. You have to come to the language laboratory of the Institute to work at your pronunciation.

2. This material does not possess elastic properties.

3. Scientists had to create new materials for industry.

4. The exam was to start in the morning.

№4 описать бессоюзное подчинение.

1. We know electricity produces heat.

2. The new materials the Russian chemists developed were used in space technology. 

№5 Описать функцию инфинитива.

1. It is necessary for Russian specialist to know a foreign language.

2. The Russian scientists were the first to construct and launch the space rocket.

3. Our idea was to design a new device for automatic control.

4. To increase the productivity of labour one must use the methods we have just described.