单项选择题

A．$ 16.
B．$ 12.
C．$4.
D．$2.
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theory is used frequently to interpret light.
单项选择题
A．Diet has nothing to do with health.B．The amount of food has something to do with health.C．Health depends on diet totally.D．Good food has nothing to do with healt
A．Diet has nothing to do with health.
B．The amount of food has something to do with health.
C．Health depends on diet totally.
D．Good food has nothing to do with healt
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