Comprehensive exercise on the mystery of fruit composition: 400 words.

One day, I was absorbed in reading the newly bought extracurricular books. Looking at it, one of the articles attracted me, called "will the fruit be bitter?" I felt very strange and thought: how can fruit compare? In order to distinguish the true from the false, I went to ask my father, who said, "Then do it yourself!" " "In order to know whether it is true or not, I found the materials I needed according to the article: Sydney and apples. I divided them into two groups. Group A is an apple and a Sydney, and Group B is two apples. I put Group A in the refrigerator and Group B in the shade at home.

A few days later, I ran to the refrigerator as soon as school was over. The apples in group A are soft and rotten at first sight. But the two apples in group B are not rotten. How did this happen? In order to ensure the scientific nature of the experiment, I did another experiment. This time, I put apples and bananas together.

A few days later, I went to see that the apple was not rotten, but there were small black spots on the banana peel.

I really don't know why. Just look up "100 thousand why" Ah, I don't know, but I can find it all! It turns out that fruits are similar to each other because they can release a colorless and odorless gas called ethylene, which can make fruits ripen quickly and even rot. Among fruits, pear is a big "nemesis" of other fruits. It releases ethylene easily, which is much more than other fruits, so it is difficult for pears to get along with other fruits. I see! After reading "100,000 Why", I finally understand.

Try it yourself if you don't believe me!