专题 15 社会生活、说理议论类2018 年高考题C【2018·全国 I】Languages have been coming and going for thousands of years, but in recent times there has been less coming and a lot more going
When the the world was still populated by hunter-gatherers,small, tightly knit (联系)groups developed their own patterns of speech independent of each other
Some language experts believe that 10,000 years ago, when the world had just five to ten million people, they spoke perhaps 12,000 languages between them
Soon afterwards, many of those people started settling down to become farmers, and their languages too became more settled and fewer in number
In recent centres, trade,industrialisation
the development of the nation-state and the spread of universal compulsory education
Especially glbalisation and better communications