【正确答案】 D

【答案解析】[理由] 本句测试下列固定结构：
be known for+N/V-ing 因……而出名
be known as+身份 因某身份而出名
be known to+一群人 对某群人而言是众所周知的
[例] The author is known for his great writing skills.
(这位作者因他杰出的写作技巧而出名。)
That man is known as a great scientist.
(那名男子以杰出科学家的身份而出名。)
The celebrity is known to most teenagers here.
(这位名人对这里大多数的青少年来说是众所周知的。)
根据上述，空格内应置入介词as，形成“be known as…”(以……的身份而出名)，合乎用法及语意，故(D)应为正选。
[注意]
be known之后也可接介词by，形成下列短语：
be known by… 凭借……而为人所知
[例] One is known by the way he treats people.
(我们可以凭借一个人的待人方式而了解他的为人。)