单项选择题

What is NOT mentioned as a part of the recycling process described in paragraph three

A．Breaking up what is breakable.
B．Sharpening metal bars.
C．Separating light elements from the heavy ones.
D．Sorting out small pieces of metal.
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The first full-scale huge recycling plants ______.
A．began to operate fifteen years ago
B．will probably take less than fifteen years to build
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D．will probably be in operation in fifteen years
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The computer is in ______ bad condition ______ I can't work with it.
A．so, that
B．such, that
C．too, that
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