单项选择题

The city is an important railroad ______ and industrial and convention center.

A．conjunction
B．network
C．junction
D．link
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单项选择题
The ______ of influenza are fever, headache, and muscular pain.
A．responses
B．symptoms
C．property
D．reflections
单项选择题
Measures of the American Government to combat terrorism will be high on the ______.
A．agenda
B．schedule
C．routine
D．timetable
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