Comments on "100,000 Reasons for Life" in the third grade? This 400-word book was a birthday present from my neighbor on my birthday. This book is a scientific book about human knowledge. This book is mainly about when to do what exercise is not good! Some foods and others can't be eaten at the same time. What will happen if you eat them? There are some secrets in the body. For example, "Why are there only two thumbs?" The answer is: "let's imagine that if there is only one thumb, it is too short to catch anything." If it is three paragraphs, it will appear weak and incompetent for a long time. So only two thumbs are the most suitable. "I'll tell you another secret. The question in the book is:" Why are you growling when you are hungry? " The answer is: "three meals a day has become a habit of people, and the stomach works according to this law." "When people eat food, the intestines and stomach will start to work and get rid of the food to provide the nutrients needed by the body. If you don't eat at dinner time, your stomach will contract as usual according to the law, and the liquid and gas in your stomach will be squeezed to the west and east for a while, making a "goo goo" sound. At this time, you will feel hungry. " "There is still a lot of knowledge in this book! I won't say them one by one. Let's talk about my feelings! This book made me realize the importance of food. I don't want to eat whatever I want. I must eat reasonably, otherwise it will be bad for my health.