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.

单项选择题Why does the man need to talk to the woman about the class

A．He didn’t understand the lecture.
B．He wants to borrow her notes next week.
C．He needs help with a makeup exam.
D．He was sick and unable to attend.

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