TOEFL Listening: TPO-TOEFL听力TPO - TH1HGPU48E98H1Z9R$

How were archaeologists able to determine how the Antikythera Mechanism operated? A. By comparing it to similar devices used 1,000 years later B. By using gamma rays to see inside of the mechanism C. By referring to ancient Greek writings about the mechanism D. By consulting with colleagues in the field of physics