问答题多极化
问答题IMF
问答题ISO
问答题teach fish to swim
问答题ICAO
问答题人才工作机制
问答题销售确认书
问答题自主招生
问答题保障性安居工程
问答题文化多样化
问答题全国重点文化保护单位
问答题放宽市场准入
问答题Department of Electrical Engineering and Computer Sciences
问答题It is common to use the term "evolution" to describe the changes to everything from football teams to presidencies. But when academics describe the evolution of languages, they literally mean that languages parent distinct offshoots, compete for usage, and die out like biological organisms. For this reason, UNESCO maintains an atlas of endangered and extinct languages that uses a classification system similar to that behind the Endangered Species List. Researchers generally measure the vulnerability of languages to extinction by metrics such as the number of native speakers. In a new research paper, "Digital Language Death, " mathematical linguist András Kornai asks what languages are endangered online and in usage on electronic devices.
问答题医疗制度改革
问答题CPI
问答题anti-ballistic missile
问答题（1）A. D.
问答题GDP
问答题白名单