单项选择题

In the background was that eternal hum.

A．long
B．never-ending
C．boring
D．extensive
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单项选择题
The word mirror in the first line could be best replaced by
A．"vehicle".
B．"device".
C．"company".
D．"reflection".
单项选择题
How long does the carnival last
A．Six days.
B．A whole week.
C．Eight days.
D．The whole of February.
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