Read the explanatory text "Kangaroo" and answer the questions

Self-sufficient human bioenergy power generation ① As coal, oil and other resources are becoming increasingly depleted and environmental degradation is becoming increasingly serious, some scientists have turned their research topics to human beings' own bioenergy in order to develop new energy sources. In the field of electricity generation using human body bioenergy, initial results have been achieved. ② There are some chemical substances in the human body, and chemical energy is generated when they react. During metabolism, energy is released from the reaction between glucose and oxygen molecules. With a little bit of harnessing, this energy can be converted into electricity. Based on this principle, scientists began research on human biobatteries. 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, and there is also a catalyst that acts as a catalyst. Glucose oxidase. The function of the polymer is 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 in an environment of 37°C and pH 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. ④There 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. Thermoelectric batteries 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 human body’s energy can be said to be inexhaustible and pollution-free. Such miraculous energy is available to each of us. We should make full use of it to save energy for our society. I hope that this new type of energy will benefit mankind more and more. (Excerpted from "The Secret of Energy Science" with changes) 1. Which forms of using human bioenergy to generate electricity does the selected article introduce? (3 points)_Example 2. What are the scientific principles based on the development of human bio-batteries? (3 points)___Example 3. What is the effect of adding the word "about" in paragraph 3 of the selected article? (2 points)___Example 4. What explanatory method is used in paragraph 4 of the selected article? What is its effect? ??(3 points) Example 5. Please draft a literary and elegant promotional language from the perspective of "saving". (4 points) Example 1. 1. [Answer] Use chemical energy to generate electricity; use gravitational potential energy to generate electricity; use thermal energy to generate electricity. [Analysis] This question tests the ability to extract important information from the text. These three sentences are also the central sentences of these three natural paragraphs. 2.[Answer] 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. [Analysis] To answer this type of question, you must first analyze the question stem, grasp the key words, and find the paragraph where it is located in the text. For example, the keyword "human biobattery" in this question appears in paragraph 2 of the selected article, then the required answer can be summarized from the sentence in paragraph 2. 3. [Answer] The word "about" means estimate. The number is uncertain (specific answers are better), which reflects the accuracy of the explanation language. [Analysis] This question examines the accuracy of expository language. As far as the situation introduced in the article is concerned, using the word "about" to express an estimate can better reflect the accuracy of the expository language, because this kind of carbon fiber is too thin and cannot be measured accurately. 4. [Answer] Give an example; specify that a special gravity converter can be used to convert gravitational potential energy into electrical energy. [Analysis] Explanation methods and their functions are common knowledge points when reading scientific and technological texts.

[Loss of Points Warning] Pay attention to the accuracy of terminology. "Example" cannot be written as "Line". 5. [Answer] Example: Promotional slogan next to the faucet: Please don’t make me cry! [Analysis] The proposed slogan must have a "saving" theme, such as saving water, saving electricity, and saving solar terms. It must also be rich in literary talent and not too straightforward. .