【正确答案】 C

【答案解析】[解析] 题意：在营救两名儿童之后，一年轻男子被欢呼拥之为英雄。
划线词hail的词义是“向……欢呼致贺”。
A项report意为报告；例句：It is reported that 20 people were killed in the accident．据报告这次事故有20人死亡。
B项prove意为证明；例句：The facts proved her assumption wrong．事实证明她的设想是错的。
C项praise意为称赞，表扬；例句：The teacher praised her for her courage．老师赞扬了她的勇气。
D项catch意为抓住。例句：I caught him peeping at my paper．他偷看我的论文时被我当场抓住了。
很明显C项正确。