试题题干
Among the types of word-meaning changes,（）and narrowing are the most common by far.
参考答案
正确答案：
试题解析
Of these word-meaning changes, extension and narrowing are by far the most common. 在词义变化类型中，词义的扩大和词义的缩小是最为常见的。
Among the types of word-meaning changes,（）and narrowing are the most common by far.
Of these word-meaning changes, extension and narrowing are by far the most common. 在词义变化类型中，词义的扩大和词义的缩小是最为常见的。