单项选择题

A．They are more popular.
B．Their number is reducing dramatically.
C．They are losing participants.
D．They are doing more harm to people.
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单项选择题
A．It requires too much traveling.B．It limits interaction among students.C．It will increase class size.D．It will encourage students to watch too much television.
A．It requires too much traveling.
B．It limits interaction among students.
C．It will increase class size.
D．It will encourage students to watch too much television.
单项选择题
A．We are busier.B．There are fewer social activities.C．More people like living alone.D．People are becoming more isolated.
A．We are busier.
B．There are fewer social activities.
C．More people like living alone.
D．People are becoming more isolated.
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