单项选择题

We have a high regard for Prof. Joseph because he always ______ his principles.

A．lives on
B．lives up to
C．lives down
D．lives with
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单项选择题
This flower does not grow well in soils ______ the one for which it has been specially developed.
A．beyond
B．rather than
C．outside
D．other than
单项选择题
He did not change his position so much as ______ its severity.
A．alter
B．vary
C．modify
D．convert
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