Last year, some groups of students in their community (社区) made a survey about “How do people spend their free time? ” The following diagrams(图表) show some results of it: Diagram (1): Hours for people of different ages who surf the Internet in a week. Diagram (2): Different days people go to the library. (library attendance出席) Diagram (3): Different programs people like. 小题1:People aged spend the most time surfing the Internet every week. A．7—16 B．17—30 C．31—55 D．over 56 小题2:How many people go to the library on Saturdays? A．About 20%. B．About 40%. C．Over 60%. D．More than 80%. 小题3:The three diagrams show us the results of a survey about . A．what people do every day B．people’s different habits C．people’s different lifestyles D．how people spend their free time