
This morning, I am going to catch two snails to do observation experiment, from which to find the mystery of snails. So, I excitedly ran to my small garden, began the "snail catch big action." Ah! Snails are hard to find! It took me a long time to find it. But, "hard work pays off," I finally found it in a wet corner. Well, there you are, and I'm going to take you home and study you." So I hurriedly brought a transparent glass box, put the snail in, and in the glass box dropped a few drops of water, adhere to wet, and then take back to do the experiment. The first experiment I did was to see what the snails ate. I started by putting a few grains of rice, a vegetable leaf and some bread crumbs into a small box to see what the snail ate. I stared at the little snail, but the little snail did not move, and Li Li ignored me. I think, it seems that the little snail probably does not like people watching it eat! Then I'll go watch TV first. After lunch, I went back to my research. I ran to the small glass box, I saw the box of vegetable leaves disappeared, only rice and bread crumbs, and snails around the grain of black things, this is probably the excrement of the snail. Snails used to eat leaves, and I thought I would eat whatever I was given. Now it's time for a second experiment: why do snails leave traces when they walk? Thinking about it, I picked up the snail and looked at its bottom, trying to figure out the mystery. Who knows the snail suddenly shrank back. I said to myself: "Ah! You can't even study it." So I ran and asked my father, who was reading the newspaper in the living room, "Dad, why does a snail leave a trail when it moves?" Dad replied: "In fact, ah snail abdomen has a kind of moving flesh foot, called gastrofoot, which is equivalent to the foot of the snail. When the snail moves, the belly foot under the head can secrete mucus, reduce friction, conducive to its crawling. We saw a shiny white line where the snail had crawled, which was actually the mark of dried mucus." "Oh, it was." 'I said happily. In fact, the world is full of surprises. If we look carefully and think carefully, we will always find the mystery.
The first experiment I did was to see what the snails ate. I started by putting a few grains of rice, a vegetable leaf and some bread crumbs into a small box to see what the snail ate. I stared at the little snail, but the little snail did not move, and Li Li ignored me. I think, it seems that the little snail probably does not like people watching it eat! Then I'll go watch TV first. After lunch, I went back to my research. I ran to the small glass box, I saw the box of vegetable leaves disappeared, only rice and bread crumbs, and snails around the grain of black things, this is probably the excrement of the snail. Snails used to eat leaves, and I thought I would eat whatever I was given. Now it's time for a second experiment: why do snails leave traces when they walk? Thinking about it, I picked up the snail and looked at its bottom, trying to figure out the mystery. Who knows the snail suddenly shrank back. I said to myself: "Ah! You can't try to study it." So I ran and asked my father, who was reading the newspaper in the living room, "Dad, why does a snail leave a trail when it moves?" Dad replied: "In fact, ah snail abdomen has a kind of moving flesh foot, called gastrofoot, which is equivalent to the foot of the snail. When the snail moves, the belly foot under the head can secrete mucus, reduce friction, conducive to its crawling. We saw a shiny white line where the snail had crawled, which was actually the mark of dried mucus." "Oh, it was." 'I said happily. In fact, the world is full of surprises. If we look carefully and think carefully, we will always find the mystery.

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