高中英语人教第1部分 课时精炼　热点话题　精深阅读(三).docx

热点话题　精深阅读(三)
主题语境：人与社会——保护语言，保留语言的多样性，提升人类认知
(2018·全国Ⅰ，C)
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 world was still populated by hunter­gatherers，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 centuries，trade，industrialisation，the development of the nation­state and the spread of universal compulsory education，especially globalisation and better communications in the past few decades，all have caused many languages to disappear，and dominant languages such as English，Spanish and Chinese are increasingly taking over.
At present，the world has about 6,800 languages.The distribution of these languages is hugely uneven.The general rule is that mild zones have relatively few languages，often spoken by many people，while hot，wet zones have lots，often spoken by small numbers.Europe has only around 200 languages；the Americas about 1,000；Africa 2,400；and Asia and the Pacific perhaps 3,200，of which Papua New Guinea alone accounts for well over 800.T