What role does water play in the metabolism of life?

I don't want to ask any questions today, I just suddenly feel the importance of water to us human beings, today, May 14th, I am at home thinking about how much water I spend a year by myself! I think there is a lot of water in my life. Such as:

Take a bath, wash vegetables, flush the toilet, ......My mother said that a family's water consumption in a month will definitely not be less than 15 tons, then it will definitely not be less than 180 tons a year, then so many of our families must have water in a year, there are more than 400 million families among 1.3 billion people, assuming that only 180 tons are used every year, then 400 million times 180 to get the result is to the tenth power), so much water consumption, we can't last a few years, I just hope we can save and save, The teacher said that in 2038, the water will almost run out, and the fate of mankind by that time will be extinction or survival! This may always be an unguessable riddle, but we should at least do our best to save everything that may happen, and we can really do it in various ways to save, such as using a bucket to flush the toilet with some usable water, etc. These things can't save much by a few families, tens of thousands of families, but we must save, even if it's just a little, 1.3 billion people save a lot of water, so we have to save even more.

I'm just a 14-year-old junior high school student, maybe I can't talk about it, but we should also think about our future generations, and we should leave them a place to live when we die. I don't want to see some people born thirsty to death, I don't want to see people die of thirst, even if I die, I don't want to see it, I just don't want to, we have a lot of areas where there is a serious shortage of water, we should be happy to live in this place with water, and we should feel lucky, although we may not be able to save those who are going to die of thirst, but I think we can prevent it, let these people write less, do our own meager efforts, let fewer people die, people in pain die, They need water, even if it's just a small bowl or a small drop, and they may be satisfied! So I want all of us to save them, okay?!

If you read this letter, I would like to ask you to tell your friends and tell them to save some water, I think in a few years, we will be able to work together to save water and save our world!! Thank you!

Water accounts for about 50 to 70 of a person's body weight. Water is the most basic nutrient to maintain life, an important raw material for the body, and a solvent for various substances. Water is directly involved in the metabolism of substances in the body, transporting oxygen and various substances, regulating body temperature, and moisturizing organs.

With the development of modern medicine and nutrition, according to the specific conditions of various diseases, scientific methods are used to supply patients with the nutrients they need, and certain nutrients are increased or decreased by adjusting diet or parenteral nutrition to achieve prevention and disease. Practice has proved that the correct nutritional supply can prevent the occurrence and development of diseases for patients who have a tendency to develop diseases, and can play a role in enhancing physical fitness, improving diseases and relieving symptoms for some non-disease patients.

Water is both a good man and a beast of prey. Even if it helps people, it also harms people (the flood).

Water withers in the human body and plays the role of life. Water is closely related to the survival of our human beings, water is our life, let me take care of water, otherwise, the last drop of water that human beings see will be their own tears!

Textbook analysis. Life and Water is an expository essay. The author succinctly introduces the common sense of water:

The role of water in the human body, the meaning of drinking water. It shows that without water, there is no life. So that we not only understand these common sense, but also understand the importance of water in the course of life, so as to consciously protect water resources and make their due obligations for a better survival of human beings.

Design Concept. Life and Water is an expository essay that introduces us to the close relationship between water and human beings. When designing the lesson plan, I fully consider the stylistic characteristics of the expository essays, pay attention to infiltrating some simple ways to explain things to students, and learn to read expository texts.

Let students learn to look at things from the perspective of connection, stimulate students' interest, and change passive learning to active and independent learning. Emphasis is placed on the role of reading aloud in teaching, and emphasis is placed on guiding students to self-read and self-realize, so that students can express their personal feelings according to their own understanding through full reading. This is conducive to stimulating students' thinking and mobilizing students' enthusiasm for learning.

Guiding students to work in groups and communicating in small groups also increases students' motivation to learn by allowing them to participate in board writing.

Design ideas. This is an expository essay, how can you get students to actively engage in learning? In teaching, I create situations for students and stimulate their interest in learning through guessing.

Teaching is based on reading, and the right to read is given to students. In the second part, the teacher guides students to understand that water and our health are closely related by asking students to look at a few new words with "three points of water" on the side. In this lesson, I will also pay special attention to the guidance of reading methods, so that students can work in small groups to record the content of the reading, try to summarize the outline, and then compare it with the outline after class, so that students can understand the detailed outline notes, which can help them grasp the main points of the passage and use this method in future reading.

After the students have studied the text, the teacher has designed "Interview experts, learn about the relationship between water and human beings, and have a dialogue based on the outline." The purpose of the session is to help students further understand the text.