Social variation of language is the most discemible and definable speech variation.

Social variation of language is the most discemible and definable speech variation.

A.正确

B.错误

正确答案是F
Regional variation of language is the most discernible and definable speech variation.
评分标准：答对得2分；正误判断错误扣全分。纠正错误不当，酌情扣分