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Robert is nine years old and Joanna is seven. They live at Mount Ebenezer. Their father has a big property. In Australia they call a farm a property. Robert and Joanna like school very much. At school they can talk to their friends, but Robert and Joanna can't see their friends. They live 100, perhaps 300, kilometers away, and like Robert and Joanna, they all go to school by radio. Mount Ebenezer is in the center of Australia. Not many people live in“The Center”. There are no schools with desks and blackboards and no teachers in“The Center”. School is a room at home with a two-way radio. The teacher also has a two-way radio. Every morning she calls each student on the radio. When all the students answer, lessons begin－Think of your teacher 300 kilometers away!

1．A“property”in Australia is a ________.

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2．The children in“The Center”do not go to school because ________.

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A．they live too far away from one another

B．they do not like school

C．they are not old enough to go to school

D．their families are too poor

3．To send their children to school, parents in“The Center”of Australia must have ________.

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A．a property

B．a car

C．a school room at home

D．an unusual radio

4．Teachers in“The Center”of Australia teach ________.

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A．not in a classroom but by radio

B．by speaking only and not showing anything in writing

C．without using any textbooks or pictures

D．without knowing whether the students are listening

5．When children are having a lesson, they can hear their teacher ________.

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A．but their teacher cannot hear them

B．but cannot hear their friends

C．and their teacher can hear them too

D．and see him or her at the same time

6．The best title of this passage(文章的标题)is ________.

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A．Robert and Joanna

B．Go to School by Radio

C．A Big Property

D．A Two-Way Radio