Passage 5 Questions 21 to 25 are based on the following passage. 　When Wally Amos was little, his family was very poor. After his parents got divorced, Amos went to live with his Aunt Della in New York City. His aunt loved to cook and she always made him special chocolate chip cookies. 　Wally dropped out of high school to join the army. After he completed his work in the army, he attended a secretarial school to learn shorthand, typing, and accounting skills. 　Wally began baking chocolate chip cookies using a recipe similar to his aunt’s. He borrowed money from his friends and opened a small shop in California. The famous Amos Cookie Company started. Soon he began to make money. Within the first two years, he was baking six tons of cookies a week and taking in over $4,000,000 in sales each year. 　He sold his company to the Bass Brothers of Fort Worth, Texas, and his cookies were soon found in grocery stores and vending machines all across the United States. 　In 1992, Wally started a new cookie company called The Uncle Noname Cookie Company that made five different kinds of cookies. Each bag of cookies also had a recipe for lemonade on the bag. He added his recipe to the cookie bag because Wally wanted his customers to know that, “...if life hands them a lemon, they can turn it into lemonade”. This expression means that if things happen that seem not to be good at the time, later they can actually turn into something good. 　The Wally Amos rejoined the first cookie company to work on sales. He wanted the company to return to the market. He also wanted it to sell some new flavors of cookies besides the popular chocolate chip cookie, to add graphics （图样） to the packaging, and to work on new national advertising to attract more customers. 　Wally has spent time as a literacy volunteer of America and he has given money to a special program called “Cities in Schools” which helps students stay in school. He also took time off in 1983 to write his autobiography, The Famous Amos Story: The Man Who Launched a Thousand Chips. In the meantime, Famous Amos had new shops popping up on the West Coast and franchised stores （特许商店） opening in Japan and its Asian neighbors. 　Wally Amos is best known for his enjoyment in making cookies and for making so many possibilities out of his life.What does the special program “Cities in Schools” aim at?