阅读理解 Nearly all American students in colleges and universities pay for their education. There are many expenses.  First of all, there is tuition (学费).  At some schools, the tuition is very high, ten thousand dollars a year or more.  At other schools, it may only be a few hundred dollars a year.  In some community colleges,  tuition is free.  There are other expenses as well.  Many students leave their homes to go to school in other cities. They may live in dormitories (寝室) or apartments (=flats), and they must pay for it. Finally, students must buy textbooks for their courses. Some families start saving money for their children's education when the children are small.  Many students work to save money for tuition.  They can also get loans (贷款) from the government.  They pay the money back to the government when they finish their education. 根据短文内容，回答下列问题。 1. Which students pay for their education? 2. How much is the higher tuition? 3. Are there any colleges with free twition? 4. Why do many students live in dormitories or apartments? 5. What must students buy finally ？