单项选择题

A．Two students.
B．A student and a parent.
C．A teacher and a student.
D．A student and a supervisor.
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单项选择题
According to the regulations of FDA, if the newly-produced orange had no vitamin C, it would have to be labeled.
A．Y
B．N
C．NG
单项选择题
In In time, as he became a familiar figure... in time (Line 4, Para.3) means _________.
A．on time
B．sometimes
C．some time later
D．some time
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