11. Why is plain water the best drink in life? (3 points)
12. Please analyze the function of the underlined sentence in paragraph ③ from the point of view of illustration method. (3 points) 13．The following statement, which is in line with the meaning of the text, is (▲)(2 points)
A．From the scientific point of view, no other drink can replace plain water.
B．Waste produced in the body can be excreted through the kidneys as long as the body is kept adequately hydrated. C．People who have a strong appetite and drink too much of other beverages are bound to become obese due to excessive intake of sugar and calories. D. Half an hour before and after meals and meals should not drink water, so as not to dilute saliva, gastric juice, resulting in indigestion. 14. Please write a public service announcement advocating drinking plain water. (2 points)
11.(1)Plain water is the easiest way to quench your thirst, and has the function of regulating body temperature, delivering nutrients and cleaning the inside of the body. (2) It has strong biological activity. It is useful for promoting cellular metabolism, energy conversion, blood circulation and maintaining electrolyte balance. (3) Boiled water can increase the hemoglobin content in the blood and enhance the body's immune function. Improve the body's ability to resist disease. (4) The content of minerals and trace elements in plain water is optimal for the human body.
12. The use of figures, make a comparison of the method of illustration, from the point of view of the mineral content of the water explains the boiling water is the most suitable for the human body.
13. A
14. Example 1: Drink white water, walk healthy. Example 2: Here's a glass of plain water for you, may you be safe all your life.
1．The reason for the little girl's happiness and contentment in the text is that she feels her mother has given her face in this matter.
2. The reason for the aggrievement and sourness is that she was laughed at by her classmates because her mineral water bottle was filled with cool white water.
3. When she faced the suspicion and ridicule of her classmates again, she understood her mother's painstaking efforts, and she realized the truth that "a person has to look down on himself even when he is poor, and if he does not look down on himself, he is really poor".
4. In the end, the little girl in the article realized that "her mother's love is just like that cold white wine, light and elegant, tasteless in itself, but with a long aftertaste." The mother's pure water" reading answer