单项选择题

In the passage "the two-way radio" is ______.

A．important to Americans
B．useful for children only
C．used as a telephone
D．only used by doctors
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单项选择题
The word sick in the second paragraph means ______.
A．ill
B．poor
C．kind
D．healthy
单项选择题
The best title of this passage is ______.
A．Australian Families
B．Australian People
C．A Useful Radio
D．A Telephone Call
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