Last year, some groups of students in their community made a survey(调查) about "How do people spend their free time?" The following diagrams(图表) show some results(结果) 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)
Diagram (3): Different programs people like.
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(1)
People aged ________ spend the most time surfing the Internet every week.
A . 7—16
B . 17—30
C . 31—55
D . over 56
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(2)
How many people go to the library on Saturdays?
A . About 20%.
B . About 40%.
C . Over 60%.
D . More than 80%.
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(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
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