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)
Diagram 3: Different programs people like.
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（1）
People aged ____ spend the least 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 Mondays? ____
A . About 80%.
B . About 60%.
C . About 40%.
D . More than 20%.
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（3）
The word "attendance" in Diagram 2 means "____ in the library".
A . the number of people
B . the hours people spend
C . the days people spend
D . the number of books
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（4）
What programs are the least popular according to Diagram 3? ____
A . Music.
B . Cartoons
C . Sports.
D . Shows.
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（5）
Which of the following is TRUE according to the diagrams? ____
A . The fewest people like watching the News.
B . Sports are the most people's favorite programs.
C . People seldom go to the library on weekdays.
D . People aged 31—55 spend more than 25 hours surfing the Internet in a week.
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