单项选择题

A．Eating a plenty of fresh vegetables and fruits.
B．Eating pills of vitamins and trace elements.
C．Alternating work with rest.
D．Doing regular body exercises.
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单项选择题
A．20 minutes.B．50 minutes.C．25 minutes.D．55 minutes.
A．20 minutes.
B．50 minutes.
C．25 minutes.
D．55 minutes.
单项选择题
A．Her complaint was ignored.B．The store sent her the correct order.C．The store apologized for their mistake.D．The store picked up the wrong items.
A．Her complaint was ignored.
B．The store sent her the correct order.
C．The store apologized for their mistake.
D．The store picked up the wrong items.
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