单项选择题

A．Archaeological
B．Biological.
C．Meteorological.
D．Sociological.
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单项选择题
A．By talking to an expert.B．By reading an article.C．By attending an exercise class.D．By listening to the radio.
A．By talking to an expert.
B．By reading an article.
C．By attending an exercise class.
D．By listening to the radio.
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Wei Fang
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