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 search the Internet in a week.

Diagram (2): Different days people go to the library. (library attendance出席)

Diagram (3): Different programs (节目) people like.

People aged          spend the most time searching the Internet every week.

A．7-16	B．17-30
C．31-55	D．over 56

How many people go to the library on Monday?

A．About 20%	B．About 60%
C．Over 80%	D．More than 40%

Which program do people like best?

A．Cartoons	B．Sports
C．News	D．Music

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