【正确答案】正确答案：Social dialect, also called social-class dialect and sociolect, refers to a variety of a language used by people belonging to a particular social class.(2 points)Two people who were born and brought up in the same region may speak differently because of a number of social factors. Consciously or unconsciously, their social backgrounds influence their choice of linguistic forms and the linguistic features of the language they use reveal their identities. The speakers of a social dialect usually share a similar socio-economic and/or educational background. From the language of the speakers, we can roughly estimate their relative social status.(4 points)

【答案解析】解析：考查社会方言的定义。社会方言是由社会群体的不同性质而形成的语言变体。社会方言和地域方言没有直接的渊源，它是由不同的职业、社会地位、政治信仰、受教育程度等因素或由这些因素构成的社区交际习惯所形成的语言差异。