试题题干
Fill in each of the following blanks with a word or an expression.
As one of the social factors, 
is closely related to language variation.
参考答案
试题解析
作为社会因素之一，年龄与语言变异密切相关。
Fill in each of the following blanks with a word or an expression.
As one of the social factors, is closely related to language variation.
作为社会因素之一，年龄与语言变异密切相关。