单选题：Whatisthefunctionofmitochondria?

题目内容：

Whatisthefunctionofmitochondria? A．Toproducephysiologicalfuel.
B．Toturnphysiologicalfuelintoenergy.
C．Tocreateoxygeninpeople'sbody.
D．Toproducecells.

参考答案：

答案解析：

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