单项选择题

An inventor can generally make a big profit if he _________ his or her invention.

A．publishes
B．keeps secret
C．patents
D．sells
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单项选择题
The author of this passage is most probably _________ .
A．American
B．British
C．Chinese
D．Australian
单项选择题
The new era of television is brought about by _________ .
A．modern technologies
B．computer technologies
C．television technologies
D．the combination of TV and computer technologies
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