I sat there for a time, cold with horror. Slowly, I began to turn over more pages. I came to a disease which was worse than the last one. I began to read about it and, as I expected, I had that disease too. Then I began to get really interested in myself, so I went back to the beginning of the book. I started with the letter 'a' and I read from 'a' to 'z'. I found that there was only one disease which I did not have. This made me a little unhappy. Why didn't I have that disease too? 去书内