问题描述：
[单选]
只要有足够的电位差，电流便可通过任何物体。（）
A．All substances will permit the passage of some electric current, provided the potential difference is high enough.
B．All substances will be permitted the passage of some electric current, provided the potential difference is high enough.
C．As long as there is enough potential differences, the current can pass through any object.
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