Usage notes and language notes in a dictionary explain the following except（ ）.
A、important British and American differences
B、difficult points of grammar and style
C、information concerning the origins of words
D、the slight differences between words of similar meanings
【正确答案】：C
【题目解析】：本题考查词典的内容。用法注释解释相似意义单词之间的细微差异；语法和文体的难点；英国英语和美国英语的重要差异。所以ABD三项都是正确的。只有C项的内容不包括在用法注释和语言注释中，所以选C。
