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Grandpa Li was very old. He lived in a small village far away from the town. So he knew less about the world. One day Grandpa Li went to the town to buy something. In a park, he saw many old people reading, and they all wore(戴着) glasses. So after lunch he went to a shop to buy a pair of glasses. The salesgirl(女售货员) let him try on a lot of glasses, but Grandpa Li always said," I still can't read after wearing them. "

The salesgirl was very surprised and asked," Excuse me, Can you read?"

"No, of course I can't!" Grandpa Li said. "But I think a pair of good glasses can help me read."