单项选择题

—De you know who invented______ telephone—No, but it is really______ telephone

A．the; the
B．/; the
C．the; /
D．the; a
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单项选择题
At the______ of the bell, the students rushed into the classroom.
A．sight
B．noise
C．voice
D．sound
单项选择题
I have kept that picture ______ I can see it every day as it always reminds me of my university days in London.
A．in which
B．which
C．where
D．when
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