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The Duolingo English Test (DET) is a standardized test of the English language designed to be internet-based rather than paper-based. DET is an adaptive test that uses an algorithm to adapt the difficulty of the test to the test-taker.
The following is a non-exhaustive list of standardized tests that assess a person's language proficiency of a foreign/secondary language. Various types of such exams exist per many languages—some are organized at an international level even through national authoritative organizations, while others simply for specific limited business or study orientation.
Duolingo Math is an app course for learning elementary mathematics. It was announced on YouTube on August 27, 2022, at the Duocon 2022 event. [70] Duolingo Math covers math topics through an interactive and gradual approach. It starts with basic arithmetic—addition, subtraction, multiplication, and division. The app also teaches fractions and ...
Duolingo logo. In 2009, von Ahn and his graduate student Severin Hacker began to develop Duolingo, a language education platform. They founded a company of the same name, with von Ahn as chief executive officer and Hacker as chief technology officer. In November 2011, a private beta test of Duolingo was launched and the app was released to the ...
Modern Mongolian evolved from Middle Mongol, the language spoken in the Mongol Empire of the 13th and 14th centuries. In the transition, a major shift in the vowel-harmony paradigm occurred, long vowels developed, the case system changed slightly, and the verbal system was restructured. Mongolian is related to the extinct Khitan language.
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A large variety of traditional Mongolian games are played using the shagai pieces. Depending on the game, the anklebones may be tossed like dice, flicked like marbles, shot at with arrows, caught in the hands, or simply collected according to the roll of a die. In many games, the side on which a tossed piece lands (horse, sheep, camel, or goat ...
The Pentaglot Dictionary [1] [2] (Chinese: 御製五體清文鑑, Yuzhi Wuti Qing Wenjian; the term 清文, Qingwen, "Qing language", was another name for the Manchu language in Chinese), also known as the Manchu Polyglot Dictionary, [3] [4] was a dictionary of major imperial languages compiled in the late Qianlong era of the Qing dynasty (also said to be compiled in 1794).