Science inventions

learned that solar-powered lamps work by using energy accumulated during the day from a solar panel. Ive learned that solar-powered cars ran on about the same amount of energy needed to run a hair dryer.
A: What have you already heard about it?
B: Ive already heard that sun-powered lamps can bring light to areas distant from any other power supply, and its use doesnt pollute the environment. Also Ive heard that solar cars used solar power, energy from the sun and were different from any gas-powered car.
2) Аудирование текста A Great Citizen of the World.
What made all these inventions possible? What helped scientists to invent different things? (Intensive work, talent , patience. . . ) Thats right. So, Im going to read you a text about T. A. Edison and you should guess what thing helped him in creating his inventions.
A Great Citizen of the World.
Every day many people visited Thomas A. Edisons laboratories in Orange, New Jersey. Some of them were young inventors, but many more of them were tourists. They came from all parts of the US and from other countries.
One day a very important citizen from England visited Edisons factories, taking with him his young son, eight years old. They spent many hours in great workshops, looking at hundreds of useful inventions.
Before leaving the laboratories the man went to the office of the main building. Giving his card to the person in charge, he asked: "May I speak to Mr. Edison, please?" The man looked at the card and then answered: "Wait a minute, Ill see. " Soon he returned and said: "Come this way, please. Mr. Edison will see you. "
The father and his son went into the great inventors workroom. "Mr. Edison", said the Englishman, "I