单项选择题

What does the author's attitude toward recycling solid waste

A．Opposed.
B．Detached.
C．Approved.
D．Optimistic.
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单项选择题
What can be inferred from the passage concerning resource recovery
A．The solid wastes can be cheaply recycled.
B．Resource recovery has become a significant vein of resource.
C．Governmental intervention is very important to solve the problems of recycling.
D．Solid waste management only involves collection and disposal.
单项选择题
We can conclude from the passage that the scientific means for recycling solid waste________.
A．requires further research
B．is available now
C．remains to be developed
D．is still being experimented
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