单项选择题

Plastics is a kind of ______ which is widely used in industry.

A．mass
B．substance
C．matter
D．material
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单项选择题
They overcame all the difficulties and fulfilled the plan ten days ahead of schedule, ______ was something we had not expected.
A．that
B．this
C．it
D．which
单项选择题
I always take it for granted that I am ______ intelligent than she is.
A．very
B．too
C．far more
D．far better
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