这道题要用比较级还是最高级

请看下面一道题：

Professor White has written some short stories, but he is _________ known for his plays.

A. the best                 B. more              C. better               D. the most

【分析】此题首先不宜选B或D，因为 well known 的比较级和最高级通常是 better known和best known，有时也可以是 more well known 和 most well known，但通常不能是 more known 和 most known。至于是选A还是C？这就要看语境。由于A和C的区别是比较级和最高级的区别，所以区分这两个答案的关键就是要分清句中涉及的是两者比较，还是三者或三者以上的比较。细读全句，我们发现句中涉及的只有 stories 和 plays 这两者，所以应选C为最佳。(from www.nmet168.com)