单项选择题

A．On the first day of class.
B．At the end of the first week of classes.
C．Halfway through the semester.
D．Just before the final examination.
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单项选择题
A．Americans’ life-style.B．Me-books.C． Do-it-yourself .D．Mind your own business.
A．Americans’ life-style.
B．Me-books.
C．"Do-it-yourself".
D．Mind your own business.
单项选择题
A．It has too much interference.B．It produces no sound whatsoever.C．The sound is too low.D．The sound is completely distorte
A．It has too much interference.
B．It produces no sound whatsoever.
C．The sound is too low.
D．The sound is completely distorte
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