问题
选择题
Don’t use words, expressions, or phrases_______ only to people with specific knowledge,
A．being known
B．having been known
C．to be known
D．known
答案
答案：D
考查非谓语动词。不要使用那些只为那些具有专业知识的人知道的单词、句式或短语。known to 作后置定语。单词等是被知道的，故用过去分词。