Задание

Choose the correct words.

The light bulb is a device that light from electricity. In addition to lighting a dark space, they can be used to show an electronic device is on, to direct traffic, for heat, and many other purposes. Early people candles and oil lamps for light. Crude incandescent lamps in the early and middle 19th century but had little use. Improved vacuum pumps and materials made them shine longer and brighter late in the century. Electric power stations brought electricity to urban and later rural areas to power them. Later gas discharge lights, including fluorescent lights, use electricity to make more light.