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A．It’s open only to teachers and postgraduates.
B．He can study there if he is writing a research paper.
C．Senior students can enjoy more rights than other undergraduates.
D．He needs the approval of his professor for the use of it.
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单项选择题
A．The newer the music is, the longer time it will last.B．It is easy for music to gain a permanent status.C．Good music always stands the test of time.D．Good music needn’t be tested by time.
A．The newer the music is, the longer time it will last.
B．It is easy for music to gain a permanent status.
C．Good music always stands the test of time.
D．Good music needn’t be tested by time.
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It is expected that there are 4 million robot vacuum cleaners and lawn mowers in ______ .
A．2002
B．2003
C．2004
D．2005
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