(单选题)

The math problem was the most difficult one I had ever met, but I ______ to work it out at last.

A.tried

B.managed

C.succeeded

D.failed

参考答案：B

参考解析：

考查动词辨析。句意：这道数学题是我遇到过的最难的一道，但我终于把它解出来了。try to do sth.意为“努力做某事”，但不体现结果是否成功；manage to do sth.意为“（经过努力后）做成某事”，强调结果是成功了的；succeed in doing sth.意为“成功做某事”；fail to do sth.意为“没能做某事”。根据句意可知，我最后终于做出来了。故选B。

知识点：词义辨析英语专业基础知识词汇教师招聘-小学英语