单项选择题

Old Mr. Brown's condition looks very serious and it is doubtful if he will ______.

A．pull off
B．pull up
C．pull through
D．pull out
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单项选择题
All parts of this machine are ______ , so that it is very simple to get replacements for them.
A．specialized
B．standardized
C．minimized
D．modernized
单项选择题
English primrose need to be grown in rich damp soil with plenty of ______ or compost worked into it.
A．marijuana
B．manure
C．malt
D．mallet
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