IV. Read the following passage and do as direct. (17-22)
The light bulb is a remarkable invention that has transformed the way we live. Thomas Edison is credited with inventing the practical incandescent light bulb in 1879. Before the light bulb, people relied on candles, gas lamps, or oil lamps to illuminate their homes. The invention of the light bulb brought about a revolution in lighting. It provided a safer, more convenient, and longer-lasting source of light. With the flick of a switch, darkness could be instantly transformed into brightness. The light bulb paved the way for the electrification of homes, cities, and entire nations. Today, we enjoy the benefits of efficient and energy-saving light bulbs that illuminate our homes and workplaces, thanks to this groundbreaking invention.
