【正确答案】 A

【答案解析】[解析] 题意：玛莎承认她对电脑一无所知。
划线词confess是及物动词(vt.)。该词的词义是“承认”。
A项admit意为承认：例句：Of course, part of the challenge is her admitting difficulty with acting in English．当然。一部分挑战是她自己承认的用英语表演的困难。
B项report意为报告；例句：It is reported that 20 people were killed in the accident．据报道，这次事故有20人死亡。
C项hope意为希望；例句：Things are not moving as fast as we hoped．事情的进展不像我们希望的那么快。
D项answer意为回答。例句：The question is simple enough to answer．这个问题很简单。容易回答。
很明显A项正确。