单项选择题

A．They are planning a picnic for the department.
B．They are having a picnic organized by the department.
C．They are discussing how to escape from the sun.
D．They are drinking and talking about the weather.
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单项选择题
It can be concluded from the passage that______.
A．rubbish is a potential remedy for the shortage of raw materials
B．local governments in the U. S. can expect big profits from recycling
C．recycling is to be recommended both economically and environmentally
D．landfills will still be widely used for waste disposal
单项选择题
Recycling has become the first choice for the disposal of rubbish because______.
A．local governments fred it easy to manage
B．recycling has great appeal for the jobless
C．recycling causes little pollution
D．other methods are more expensive
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