Self-sufficient human bioenergy generation reading training

Read the following article "Self-sufficient human bioenergy generation" and complete questions 15-19. (14 points)

① As resources such as coal and oil are increasingly depleted and environmental degradation becomes increasingly serious, some scientists have turned their research topics to the field of human bioenergy in order to develop more new energy sources. , The use of human bioenergy to generate electricity has achieved initial results

② There are some chemical substances in the human body, and chemical energy will be generated when they react. For example, during metabolism, the reaction between glucose and oxygen molecules releases energy. If it is slightly utilized, this energy can be converted into electrical energy. Based on this principle, scientists have begun research on human biological batteries.

③According to experts, the electrodes of the human biobattery are made of two carbon fibers with a length of 2 cm and a diameter of about 1 / 7000 nanometers. The outer layer of each carbon fiber is also coated with a polymer. In addition, there is a glucose oxidase polymer that serves as a catalyst to connect the carbon fiber and glucose oxidase into a circuit, and the glucose oxidase is used to accelerate the chemical reaction between glucose and oxygen molecules. This human biobattery works at 37°C and a pH of 7.2, which is very close to the temperature and pH of human blood. The power it generates can drive a small sensor that monitors diabetes.

④ There are other forms of human bioenergy power generation. When a person sits or stands, gravitational potential energy is continuously generated. At this time, if a special gravity converter can be used, this energy can be converted into electrical energy. There is a company in the United States that buries a power generation device in a crowded public place, with a row of pedals outside. When a pedestrian walks over the board, his weight presses on the board, causing the rocker connected to the pedal to move in the other direction, thereby driving the central axis to rotate and starting the generator connected to it.

⑤ In addition, the heat energy in human body bioenergy can also be utilized. People emit a large amount of heat energy every day, and it spreads through radiation. Generally, a 50-kilogram adult dissipates about 2,500 kcal of heat throughout the day and night. A thermoelectric battery made from the human body's thermal energy can convert the human body's thermal energy into electrical energy. This thermoelectric battery is so delicate that it can work just by putting it in your pocket. It can function as a power source to power hearing aids, pocket TVs, micro generators, etc. It can be said to generate electricity for your own use.

⑥The energy of the human body can be said to be inexhaustible, and there is no pollution. Such magical energy is available to each of us. If we make full use of it, we will save more for our society. It is hoped that this new type of energy will benefit mankind more and more.

(Selected from "The Secret of Energy Science" with changes)

15. What forms of electricity generation using human bioenergy are introduced in the selected article? (3 points)

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16. What are the scientific principles based on the development of human bio-batteries? (3 points)

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17. What is the purpose of adding the dotted word "about" in paragraph 3 of the selected article? (3 points)

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18. What explanatory method is used in paragraph 4 of the selected text? What does it do? (3 points)

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19. From the perspective of "saving energy", please draft a literary and elegant promotional phrase. (2 points)

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[Reference answer]

15. Use chemical energy to generate electricity: use gravitational potential energy to generate electricity; use thermal energy to generate electricity.

16. There are some chemical substances in the human body. When they react, they will produce chemical energy. With a little use, this energy can be converted into electrical energy.

17. "Yue" means an estimate, and the number is uncertain (a specific answer is better), which reflects the accuracy of the explanation language.

18. Give an example; specifically explain that a special gravity converter can be used to convert gravitational potential energy into electrical energy.

19. Example: Promotional slogan beside the faucet: Please don’t make me cry!