单项选择题

According to the talk, who owned the receivers in the early days of radio

A．Military communications officers.
B．People who treated radio technology as a hobby.
C．People who lived in big cities.
D．People with an interest in music

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单项选择题

Why does the man want to take a class at the community college

A．Its courses cost less.
B．It has a pool.
C．The class size is smaller.
D．It may offer the class he needs during the day.

单项选择题

When do the students pay for the meals they contract for

A．When they get the meal.
B．At the beginning of the week.
C．At the beginning of the year.
D．At the end of the year.