单选题
Why could it not be easy for Robert to prove himself?
A、
Because he was not sure if he was really strong.
B、
Because he was new.
C、
Because he must choose the best one among different ways.
【正确答案】
C
【答案解析】
[解析] 根据文章第一段最后三句话不难看出，C最合适。故本题答案为C。
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