阅读理解。 Make the best of graduation secondhand market The hottest items at graduation sales are secondhand textbooks and class notes from graduating upperclassmen. Some even sell guidelines for exams. Books used by upp erclassmen will surely help you study. Classics ranging from The Romance of Three Kingdoms and A Dream of the Red Mansion to English novels such as Pride and Prejudice , Da Vinci Code have price tags much lower than their market price. Senior women students sell off clothes for job interviews and dates with their boy friends. Some even sell fashion hair straighteners and hairdry ers. Most of them are in good condition. Secondhand bicycles are always the stars of the sale. The tip is to buy a lock which matches the price of the bike. Electronic devices（装置）such as MP4 players, recorders and PCs are also popular. But be careful when choosing because dorm electric devices can be in poor condition because of overuse. 1. What are the favorite things sold at the graduation sales? A. MP4 players and fashion clothes. B. Secondhand textbooks and class notes. C. Classics and secondhand bikes. D. PCs and fashion hair straighteners. 2. According to the text, what should be taken into account when you buy a used bike? A. A good quality hairdryer. B. An electronic device. C. A fashion hair straightener. D. A well-matched lock. 3. Why should electric devices be carefully chosen at the market? A. Because they are practical at a low price. B. Because they are bargains in good quality. C. Because they have already been overused. D. Because they will do harm to your health.