It's my cousin.My cousin is 5 years old. Once, she came to my house to play. My mother asked me to take her out. We went out with two bananas in hand.Along the way, we talked and laughed. My sister ran a long way after eating bananas and threw the banana peel into the garbage bin. But I threw it on the ground casually and ran to find my sister. Like we hadn't seen for years, I ran to my sister. My sister ran towards me. I took her little hand and went on walking. Her eyes were shining like jewels. I asked curiously:''What's the matter? Why do you always look back? Is there any gold missing from the back? She turned to me and said, "Sister, I'm looking at the banana peel you threw away. I always think you should pick it up." I laughed, laughing stomach ache, thinking: "It is childish, banana peel what good-looking." I answered, "Now, there are cleaners all over the street, and they will be picked up later." As soon as the voice fell, she took my hand again and ran back like mad. I was out of breath, running, and suddenly stopped. I saw that this was where I had just thrown the banana peel. She said aloud, "What are you bringing me here for?" She answered, "Take you to pick up the banana peel? You see, this banana skin is so black that it must have been trampled by many people. In case the old man tramples on it, the consequences are unimaginable. Didn't you ever hear that everyone is responsible for protecting the bad environment? After that, she picked up the banana peel and jumped forward. I looked at her back and felt ashamed.At a young age, what I said is reasonable. My big child can't feel ashamed. So smart little girl, respecting the old and loving the young, caring for the environment, is more powerful than adults. It's a shame that a young cousin, like a young adult, should teach me a lesson. I want to learn from her. Isn't the spirit of a young cousin worthy of our respect?