Mr．Tom Forester lived by himself a long way from town．He hardly ever left his home, but one day he went into town to buy some things in the market．After he had bought them, he went into a restaurant and sat down at a table by himself．When he looked around, he saw several old people put glasses on before reading their newspapers, so after lunch he decided to go to a shop to buy himself some glasses too．He walked along the road, and soon found a shop.The man in the shop made him try on a lot of glasses, but Tom always said," No, I can't read with these．"The man became more and more puzzled （迷惑不解） , until finally he said, "Excuse me, but can you read at all?""No, of course I can’t!" Tom said angrily．"If I was already able to read, do you think I would have come here to buy glasses?"