单项选择题

Passage One What does the speaker say about television signals

A．They travel faster near the TV station.
B．They can work better than ever before.
C．They usually follow the curve of the earth.
D．They travel in straight lines in all directions~
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单项选择题
Why does the woman say the man has led a dangerous life
A．He often goes on exploring expeditions.
B．He is a racing driver for many years.
C．He likes to join in extreme sports.
D．He often drives fast during the night.
问答题
目前大学生网络首先问题日益严重 2．这种问题带来的危害 3．如何加强学生的网络道德教育
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