The British commander tried to make Nathan Hale ___, but he failed.

A．turn a traitor

B．turn the traitor

C．turn traitor

D．turn traitors

已知Fe+CuSO₄==Cu+FeSO₄。将足量的细铁丝放入一定量的硫酸铜溶液中，则下列图形表示正确的是[ ]

A．

B．

C．

D．