单项选择题

A．Seven or ten meals per week.
B．Twenty-one meals per week.
C．Fourteen meals per week.
D．A free choice of paying method.
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单项选择题
A．At the age of 20.B．By the age of 12.C．When he was at high school.D．When he studied in Harvard University.
A．At the age of 20.
B．By the age of 12.
C．When he was at high school.
D．When he studied in Harvard University.
单项选择题
A．Boaters.B．Journalism students.C．Weather forecasters.D．Radio operators.
A．Boaters.
B．Journalism students.
C．Weather forecasters.
D．Radio operators.
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