单选题 The English language contains a(n) ______ of words which are comparatively seldom used in ordinary conversation.
[A] altitude [B] latitude [C] multitude [D] attitude

【正确答案】 C
【答案解析】multitude大批，大量；altitude高度；海拔；latitude纬度；attitude态度。句意：英语里的普通对话中有大量相对不常用的词汇。