单项选择题
A．always went to school together B．could have lessons on the radios C．listened to teachers at school D．built radio schools with teachers
A．The two-way radio is like a telephone for Australian farmers. B．Families on large farms could keep in touch with each other by radios. C．The two-way radio is like a newspaper for Australian farmers. D．All the Australians live on dry places, and they use radios in many ways.
A．important to Americans B．useful for children only C．used as a telephone D．only used by doctors