单项选择题

（）should be involved in the campaign to deal with substance abuse among youth.

A．Schools
B．Local, state and national governments
C．Families and community
D．All of the above

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单项选择题
The best title for this passage is（）

A．Australian Families
B．Australian Pe0ple
C．A Useful Radio
D．A Telephone Call
填空题
A.gravity B.valuable C.dangerous D.companion
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