单项选择题

How do many senior citizens feel

A．Feel enjoyable.
B．Feel safe in big cities.
C．Feel unproductive, and lonely.
D．Feel fre
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单项选择题
Why are senior citizens gaining social influence
A．Because the number of senior citizens is growing and because senior citizens are more active.
B．Because senior citizens have experience.
C．Because their average life span is longer.
D．Because they do more work now.
单项选择题
How old are senior citizens
A．People of 65 years old.
B．People over 65 years of age.
C．People between 60 and 65 years old.
D．Retired peopl
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