【正确答案】正确答案：As far as language teaching is concerned, sociolinguistics is believed to have made some important contributions which can further be summarized as follows: (1)Sociolinguistics has contributed to a change of emphasis in the content of language teaching; (2)It has also contributed to innovations in materials and activities for the classroom; (3)It has contributed to a fresh look at the nature of language development and use; (4)It has contributed to a more fruitful research in this field.

【答案解析】解析：(考查社会语言学对语言教学的贡献)