With the rapid development of human science and technology, the demand for energy is increasing. According to scientists' speculation, if we continue to exploit at such a speed, our most dependent energy, oil, will be completely exhausted by the end of this century. It is an urgent task for us to reduce the use of non-renewable energy such as oil, natural gas and coal and find new energy sources.

Let's boldly imagine how incredible the energy used by human beings in the future will be.

Let's build a magical country in our mind. The waterwheel is on the river-water energy; There are countless huge windmills in the field-wind energy; The roofs of all buildings in the city are solar panels-solar energy; The floors of all roads, sidewalks and corridors are covered with a strange material, which collects the electric energy and heat energy generated by the movement of cars, people and animals-friction energy. There is a factory that uses plants to produce plant fuel; There is a means of transportation that can go out to sea and travel around the universe. Its fuel is solar energy and biofuel. There is a kind of lamp that can stay on as long as the river is flowing.

Imagine the life of a child in the future. The sun shone on the little girl's black hair. Facing the morning light, the little girl opened her eyes, her pink little hand leaned out from the soft goose down quilt, pressed the third red button on the bedside, and in the kitchen downstairs, the conveyor belt took out the ingredients from the refrigerator, heated them with an electric stove and served them on the table. All this depends on heat and electricity collected from underground.

Enjoy the perfect food, put on your schoolbag, get on the smart car, click on the location of the school on the screen, and the solar energy collected by the car in the morning combined with the same amount of plant fuel will instantly come to the school gate. ...

In the future, this hopeful word makes us look forward to it infinitely. Will mankind be more brilliant in the future? Human beings are making continuous progress. What kind of energy will mankind depend on in the future? Let's imagine the future, find more environmentally friendly energy and benefit the world.