单项选择题

Some hard plastics can be ______ metals in manufacturing machine parts.

A．substituted for
B．taken the place of
C．replaced in
D．given way to
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单项选择题
Use the following words in sentences, to ______ their meanings.
A．bring to
B．bring about
C．bring out
D．bring up
单项选择题
We've ______ salt. Ask Mrs. Jones to lend us some.
A．run away with
B．run over
C．run off
D．run out of
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