修改后：
A few days ago, I found a strange thing, can you guess? Well, let me tell you, that is, the oil can kill the goldfish. You might think I'm kidding, but you're wrong, I am serious. On Sunday morning, I got up early. As usual, I came to the goldfish bowl and looked at my little goldfish. These five small goldfish are beautiful, like some princesses dressed in gorgeous clothes, yellow, white, black. As I ate bread, I looked at the fish. They swam one by one to rush out of the water, and I thought that maybe they were hungry. So, I broke a piece of bread to give them to eat. At this time, my father shouted behind me, "Do not feed them." I was so surprised to ask, "Dad, why don't you give them to me?" He said, "It's up to you to find out." When I listened to my father, I took out two goldfish and put them in another fish bowl. And then I put the bread I had just broken down. They scrambled to grab it, and soon the bread was eaten up. I opened all eyes to look at them, but nothing happened. I thought, my father must lie to me. So, I went to play. The next day, when I came to see them, they died. I was very sad, and suddenly, I found a layer of oil floating on the water. I thought whether this layer of oil had relationship with the death of two goldfish. So, I went to get the answer. Finally, I found it in the "Mr. Know all", which says that the oil cut off the air, so the fish die of lacking of air.
修改老师：Crystal 老师
五年级:李昕怡
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