单项选择题

The old lady has developed a ______ cough which cannot be cured completely in a short time.

A．perpetual
B．permanent
C．chronic
D．sustained
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单项选择题
Those who ______ armed intervention in the internal affairs of other countries are blindto the lessons of history.
A．advocate
B．affirm
C．avail
D．applaud
单项选择题
She gets along very well with everyone; so she is the most ______ member of our family.
A．rusty
B．impetuous
C．compatible
D．imperious
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