To succeed in a difficult task ,.A. Persistence is neededB. Persistence is what you needC.

To succeed in a difficult task , .
A. Persistence is needed
B. Persistence is what you need
C. One needs to be persistent
D. A persistent nature is needed

A. Persistence is neededB. Persistence is what you need(答案→)C. One needs to be persistentD. A persistent nature is needed解析：考查非谓语动词，题中用不定式做目的状语，不定式的逻辑应和句子的主语保持一致，根据语境不定式的动作的执行者是人，从四个选项中可以看出只有C中的主语是人，句意：为了在困难的任务中成功，一个人需要坚持不懈。所以选C。

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