I am a small watermelon seed. Since I was eaten by a careless classmate, I have had my first extraordinary experience. I was just glad that I was not cut in half by a knife. I saw a row of steel blocks smashed down and looked at my fallen companion. Before I could react, I quickly slipped down like a slide. I set the standard answer before sending the second half.

I hope to adopt it. 4. Write a popular science story about the adventures of watermelon seeds.

A classmate ate watermelon and accidentally swallowed a watermelon seed. What kind of experience will this watermelon seed have in his body? Please write a short article on popular science with the topic of "Adventures of Watermelon Seeds". Note: it should include the passages of mouth, pharynx, esophagus, stomach, small intestine and large intestine.