It is a good helper for teachers and students.
I didn't know why the moon changed before, so I pestered my father every day and said that my father didn't know either.
One day, my father put a book in front of me after work. "Mei Mei, haven't you always wanted to know why the moon has a full moon? There are answers in this book and a lot of knowledge you don't know! " Dad said proudly. I can't wait to open this map of wisdom. The answer is found! It turns out that the moon, like the earth, has a day and a night hemisphere, but the difference is that a day and a night on the moon is equivalent to a month on the earth. On the earth, we can only see that part of the moon during the day, and the moon revolves around the earth, always facing the earth with about the same hemisphere, so that we can see the changes of the moon's one-month cycle.
In this book, I also know the secrets of the nine planets and the Milky Way, and know how small we humans are. This book also introduces some interesting natural phenomena: how are the "four seasons" formed in a year? What color is under the sea floor? Why is the sea blue? How did the sandstorm form ... I found a lot of scientific reasons and solved the mystery in my heart.
In short, "100,000 Why" is a good book, which makes me realize how colorful the world is and how interesting the knowledge is. I like this set of books because it is interesting, informative, inspiring and attracts me.
We should read more books, the magical door of nature!