单选题 According to the theory of semantic triangle. A Word is not directly related to the thing it refers to. They are connected by ______.
A. meaning B. reference C. concept D. sense

【正确答案】 C
【答案解析】这一种意义理论认为单词和事物之间的联系不是直接的，必须靠人脑中的概念作为中介来连接。