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
This could be the result of laziness or ______ which would lose him his customers or his job.
A．integrity
B．denial
C．deduction
D．incompetence
单项选择题
Research on friendship has demonstrated that ______.
A．every student has five or six friends
B．judges are always influenced by a pretty face
C．ugly people find it harder to make friends than beautiful people
D．we tend to grow fond of people if we dislike them at first sight
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