When I was a child, I always liked to ask why. Strange questions often embarrassed my mother. Later, I read the book "100,000 Why" on the school shelf and couldn't put it down! Read hungrily.

There are many questions in this book that I didn't understand before. After reading it, I suddenly realized. For example, I have always wondered why elephants can't choke when they drink water through their noses. This book tells me the answer. It turns out that there is a small cover in the elephant's nose, which is usually open when breathing, and will automatically cover when absorbing water, so that water will not enter the trachea. Also, why do cats' eyes change three times a day? That's because the cat's pupil is very large, and the "pupil sphincter" has a very strong contraction ability, which can adjust the pupil according to different light. In the morning, the eye intensity is average, and the pupil becomes a jujube pit; At noon, the sun is strong and the pupils contract into a line; At night, when the light is dark, the pupils become bigger and rounder. You are so funny!

I like this book very much. It taught me a lot of knowledge and strange phenomena in nature. Students, do you know why Magnolia blooms first and then grows leaves? Why don't spiders belong to insects? Why can the tongue tell the taste?

Take a look at this book, it will tell you all the answers.