Zhao Yuanren was one of the greatest Chinese linguist, educator and scholar, and his Mandarin Primer was one of the most widely used Mandarin Chinese textbooks I the 20th century.

Zhao Yuanren was one of the greatest Chinese linguist, educator and scholar, and his Mandarin Primer was one of the most widely used Mandarin Chinese textbooks I the 20th century.
A.正确
B.错误
正确答案：正确